求七年级下册解方程题10道...急啊..... 求各位给我出10道初一解方程应用题。急！急！急！随便做出来。
\u521d\u4e00\u89e3\u65b9\u7a0b\uff0810\u9053\uff5e\uff09\u9009\u6211\u7684\u5427 \u6211\u4e0d\u8981\u5206
\uff0d38\uff09\uff0b52\uff0b118\uff0b\uff08\uff0d62\uff09\uff1d
\uff08\uff0d32\uff09\uff0b68\uff0b\uff08\uff0d29\uff09\uff0b\uff08\uff0d68\uff09\uff1d
\uff08\uff0d21\uff09\uff0b251\uff0b21\uff0b\uff08\uff0d151\uff09\uff1d
12\uff0b35\uff0b\uff08\uff0d23\uff09\uff0b0\uff1d
\u5229\u7528\u6709\u7406\u6570\u7684\u52a0\u6cd5\u89e3\u4e0b\u97622\u9898
(1)\u738b\u8001\u4f2f\u4e0a\u8857\u65f6\u5e26\u6709\u73b0\u91d1550\u5143,\u8d2d\u7269\u7528\u53bb260\u5143,\u53c8\u53bb\u94f6\u884c\u53d6\u6b3e150\u5143,\u73b0\u5728\u738b\u8001\u4f2f\u8eab\u4e0a\u8fd8\u6709\u591a\u5c11\u73b0\u91d1?
(2)\u6f5c\u6c34\u8247\u539f\u505c\u5728\u6d77\u9762\u4e0b800\u7c73\u5904,\u5148\u6d6e\u4e0a150\u7c73,\u53c8\u4e0b\u6f5c200\u7c73,\u8fd9\u65f6\u6f5c\u6c34\u8247\u5728\u6d77\u9762\u4e0b\u591a\u5c11\u7c73\u5904?
\uff08-6\uff09+8+\uff08-4\uff09+12
3\u53c81/4+\uff08-2\u53c83/5\uff09+5\u53c83/4+\uff08-8\u53c82/5\uff09
9+\uff08-7\uff09+10+\uff08-3\uff09+\uff08-9\uff09
27+\uff08-26\uff09+33+\uff08-27\uff09
\uff08+4\u53c85/8\uff09+\uff08-3.257\uff09+\uff08-4.625)
23+\uff08-17\uff09+6+\uff08-22\uff09
-2+3+1+\uff08-3\uff09+2+\uff08-4\uff09
23+(-73)
(-84)+(-49)
7+(-2.04)
4.23+(-7.57)
7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
(-17/4)+(-10/3)+(+13/3)+(11/3)
(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(+1.3)-(+17/7)
(-2)-(+2/3)
|(-7.2)-(-6.3)+(1.1)|
|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(-4)(+6)(-7)
(-27)(-25)(-3)(-4)
0.001*(-0.1)*(1.1)
24*(-5/4)*(-12/15)*(-0.12)
(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7)
(-24/7)(11/8+7/3-3.75)*24
(-71/8)*(-23)-23*(-73/8)
(-7/15)*(-18)*(-45/14)
(-2.2)*(+1.5)*(-7/11)*(-2/7)
[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
5+21*8/2-6-59
68/21-8-11*8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3+2
22+(-4)+(-2)+4*3
-2*8-8*1/2+8/1/8
(2/3+1/2)/(-1/12)*(-12)
(-28)/(-6+4)+(-1)
2/(-2)+0/7-(-8)*(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x+2y-5x-7y
\u6709\u7406\u6570\u7684\u52a0\u51cf\u6df7\u5408\u8fd0\u7b97
\u3010\u3010\u540c\u6b65\u8fbe\u7eb2\u7ec3\u4e60\u3011
1\uff0e\u9009\u62e9\u9898\uff1a
\uff081\uff09\u628a-2-\uff08+3\uff09-\uff08-5\uff09+\uff08-4\uff09+\uff08+3\uff09\u5199\u6210\u7701\u7565\u62ec\u53f7\u548c\u7684\u5f62\u5f0f\uff0c\u6b63\u786e\u7684\u662f\uff08 \uff09
A\uff0e-2-3-5-4+3 B\uff0e-2+3+5-4+3
C\uff0e-2-3+5-4+3 D\uff0e-2-3-5+4+3
\uff082\uff09\u8ba1\u7b97\uff08-5\uff09-\uff08+3\uff09+\uff08-9\uff09-\uff08-7\uff09+ \u6240\u5f97\u7ed3\u679c\u6b63\u786e\u7684\u662f\uff08 \uff09
A\uff0e-10 B\uff0e-9 C\uff0e8 D\uff0e-23
\uff083\uff09-7\uff0c-12\uff0c+2\u7684\u4ee3\u6570\u548c\u6bd4\u5b83\u4eec\u7684\u7edd\u5bf9\u503c\u7684\u548c\u5c0f\uff08 \uff09
A\uff0e-38 B\uff0e-4 C\uff0e4 D\uff0e38
\uff084\uff09\u82e5 +\uff08b+3\uff092=0,\u5219b-a- \u7684\u503c\u662f\uff08 \uff09
A\uff0e-4 B\uff0e-2 C\uff0e-1 D\uff0e1
\uff085\uff09\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f\uff08 \uff09
A\uff0e\u4e24\u4e2a\u8d1f\u6570\u76f8\u51cf\uff0c\u7b49\u4e8e\u7edd\u5bf9\u503c\u76f8\u51cf
B\uff0e\u4e24\u4e2a\u8d1f\u6570\u7684\u5dee\u4e00\u5b9a\u5927\u4e8e\u96f6
C\uff0e\u6b63\u6570\u51cf\u53bb\u8d1f\u6570\uff0c\u5b9e\u9645\u662f\u4e24\u4e2a\u6b63\u6570\u7684\u4ee3\u6570\u548c
D\uff0e\u8d1f\u6570\u51cf\u53bb\u6b63\u6570\uff0c\u7b49\u4e8e\u8d1f\u6570\u52a0\u4e0a\u6b63\u6570\u7684\u7edd\u5bf9\u503c
\uff086\uff09\u7b97\u5f0f-3-5\u4e0d\u80fd\u8bfb\u4f5c\uff08 \uff09
A\uff0e-3\u4e0e5\u7684\u5dee B\uff0e-3\u4e0e-5\u7684\u548c
C\uff0e-3\u4e0e-5\u7684\u5dee D\uff0e-3\u51cf\u53bb5
2\uff0e\u586b\u7a7a\u9898\uff1a\uff084\u2032\u00d74=16\u2032\uff09
\uff081\uff09-4+7-9=- - + \uff1b
\uff082\uff096-11+4+2=- + - + \uff1b
\uff083\uff09\uff08-5\uff09+\uff08+8\uff09-\uff08+2\uff09-\uff08-3\uff09= + - + \uff1b
\uff084\uff095-\uff08-3 \uff09-\uff08+7\uff09-2 =5+ - - + - .
3\uff0e\u628a\u4e0b\u5217\u5404\u5f0f\u5199\u6210\u7701\u7565\u62ec\u53f7\u7684\u548c\u7684\u5f62\u5f0f\uff0c\u5e76\u8bf4\u51fa\u5b83\u4eec\u7684\u4e24\u79cd\u8bfb\u6cd5\uff1a\uff088\u2032\u00d72=16\u2032\uff09
\uff081\uff09\uff08-21\uff09+\uff08+16\uff09-\uff08-13\uff09-\uff08+7\uff09+\uff08-6\uff09\uff1b
\uff082\uff09-2 -\uff08- \uff09+\uff08-0.5\uff09+(+2)-(+ )-2.
4.\u8ba1\u7b97\u9898(6\u2032\u00d74=24\u2032)
(1)-1+2-3+4-5+6-7;
(2)-50-28+(-24)-(-22);
(3)-19.8-(-20.3)-(+20.2)-10.8;
(4)0.25- +(-1 )-(+3 ).
5.\u5f53x=-3.7,y=-1.8,z=-1.5\u65f6,\u6c42\u4e0b\u5217\u4ee3\u6570\u5f0f\u7684\u503c(5\u2032\u00d74=20\u2032)
(1)x+y-z; (2)-x-y+z; (3)-x+y+z; (4)x-y-z.
\u3010\u7d20\u8d28\u4f18\u5316\u8bad\u7ec3\u3011
(1) (-7)-(+5)+(+3)-(-9)=-7 5 3 9;
(2)-(+2 )-(-1 )-(+3 )+(- )
=( 2 )+( 1 )+( 3 )+( );
(3)-14 5 (-3)=-12;
(4)-12 (-7) (-5) (-6)=-16;
(5)b-a-(+c)+(-d)= a b c d;
2.\u5f53x= ,y=- ,z=- \u65f6,\u5206\u522b\u6c42\u51fa\u4e0b\u5217\u4ee3\u6570\u5f0f\u7684\u503c;
(1)x-(-y)+(-z); (2)x+(-y)-(+z);
(3)-(-x)-y+z; (4)-x-(-y)+z.
3.\u5c31\u4e0b\u5217\u7ed9\u7684\u4e09\u7ec4\u6570,\u9a8c\u8bc1\u7b49\u5f0f\uff1a
a-(b-c+d)=a-b+c-d\u662f\u5426\u6210\u7acb.
(1)a=-2,b=-1,c=3,d=5;
(2)a=23 ,b=-8,c=-1 ,d=1 .
4.\u8ba1\u7b97\u9898
(1)-1-23.33-(+76.76);
(2)1-2*2*2*2;
(3)(-6-24.3)-(-12+9.1)+(0-2.1);
(4)-1+8-7
\u3010\u751f\u6d3b\u5b9e\u9645\u8fd0\u7528\u3011
\u67d0\u6c34\u5229\u52d8\u5bdf\u961f,\u7b2c\u4e00\u5929\u5411\u4e0a\u6e38\u8d705 \u5343\u7c73,\u7b2c\u4e8c\u5929\u53c8\u5411\u4e0a\u6e38\u8d705 ,\u7b2c\u4e09\u5929\u5411\u4e0b\u6e38\u8d704 \u5343\u7c73,\u7b2c\u56db\u5929\u53c8\u5411\u4e0b\u6e38\u8d704.5\u5343\u7c73,\u8fd9\u65f6\u52d8\u5bdf\u961f\u5728\u51fa\u53d1\u70b9\u7684\u54ea\u91cc?\u76f8\u8ddd\u591a\u5c11\u5343\u7c73?
\u53c2\u8003\u7b54\u6848\uff1a
\u3010\u540c\u6b65\u8fbe\u7eb2\u7ec3\u4e60\u3011
1.(1)C;(2)B;(3)D;(4)A;(5)C;(6)C 2.(1)4,(-7),(-9) (2)(-6),(-11),(-4),2; (3)-5,8,2,3; (4)3,7,2;
3.\u75654.(1)-4; (2)-80; (3)-30.5 (4)-5
5.(1)-4; (2)4; (3)0.4; (4)-0.4.
\u3010\u7d20\u8d28\u4f18\u5316\u8bad\u7ec3\u3011
1.(1)-,+,+; (2)-,+,-,-; (3)+,+; (4)-,+,+; (5)-,+,-,-.
2.(1) (2) (3) (4)-
3.(1) (2)\u90fd\u6210\u7acb.
4.(1)-
(2)
(3)-29.5
(4)-1 \u7b2c(4)\u9898\u6ce8\u610f\u540c\u53f7\u7684\u6570\u3001\u4e92\u4e3a\u76f8\u53cd\u6570\u5148\u5206\u522b\u7ed3\u5408\u3002
\u3010\u751f\u6d3b\u5b9e\u9645\u8fd0\u7528\u3011
1\uff0e\u4e0a\u6e381 \u5343\u7c73
\u53c2\u8003\u8d44\u6599\uff1a\u6211\u53ea\u627e\u5230\u8fd9\u4e9b\u9053\u9898\uff0c\u5bf9\u4e0d\u8d77\u554a\u3002\u81ea\u5df1\u770b\u5427
\u4e00\u3001\u67d0\u6c34\u4ea7\u54c1\u5e02\u573a\u7ba1\u7406\u90e8\u95e8\u89c4\u5212\u5efa\u9020\u9762\u79ef\u4e3a2400\u5e73\u65b9\u7c73\u7684\u5927\u68da\uff0c\u5927\u68da\u5185\u8bbeA\u79cd\u7c7b\u578b\u548cB\u79cd\u7c7b\u578b\u7684\u5e97\u9762\u517180\u95f4\uff0c\u6bcf\u95f4A\u79cd\u7c7b\u578b\u7684\u5e97\u9762\u7684\u5e73\u5747\u9762\u79ef\u4e3a28\u5e73\u65b9\u7c73\uff0c\u6708\u79df\u8d39\u4e3a400\u5143\uff0c\u6bcf\u95f4B\u79cd\u7c7b\u578b\u7684\u5e97\u9762\u7684\u5e73\u5747\u9762\u79ef\u4e3a20\u5e73\u65b9\u7c73\uff0c\uff0c\u6708\u79df\u8d39\u4e3a360\u5143\uff0c\u5168\u90e8\u5e97\u9762\u7684\u5efa\u9020\u9762\u79ef\u4e0d\u4f4e\u4e8e\u5927\u68da\u603b\u9762\u79ef\u768485%\u3002
\uff081\uff09\u8bd5\u786e\u5b9aA\u79cd\u7c7b\u578b\u5e97\u9762\u7684\u6570\u91cf\uff1f \uff082\uff09\u8be5\u5927\u68da\u7ba1\u7406\u90e8\u95e8\u901a\u8fc7\u4e86\u89e3\uff0cA\u79cd\u7c7b\u578b\u5e97\u9762\u7684\u51fa\u79df\u7387\u4e3a75%\uff0cB\u79cd\u7c7b\u578b\u5e97\u9762\u7684\u51fa\u79df\u7387\u4e3a90%\uff0c\u4e3a\u4f7f\u5e97\u9762\u7684\u6708\u79df\u8d39\u6700\u9ad8\uff0c\u5e94\u5efa\u9020A\u79cd\u7c7b\u578b\u7684\u5e97\u9762\u591a\u5c11\u95f4\uff1f
\u89e3\uff1a\u8bbeA\u79cd\u7c7b\u578b\u5e97\u9762\u4e3aa\u95f4\uff0cB\u79cd\u4e3a80-a\u95f4
\u6839\u636e\u9898\u610f
28a+20\uff0880-a\uff09\u22652400\u00d785%
28a+1600-20a\u22652040
8a\u2265440
a\u226555
A\u578b\u5e97\u9762\u81f3\u5c1155\u95f4
\u8bbe\u6708\u79df\u8d39\u4e3ay\u5143
y=75%a\u00d7400+90%\uff0880-a\uff09\u00d7360
=300a+25920-324a
=25920-24a
\u5f88\u660e\u663e\uff0ca\u226555\uff0c\u6240\u4ee5\u5f53a=55\u65f6\uff0c\u53ef\u4ee5\u83b7\u5f97\u6700\u5927\u6708\u79df\u8d39\u4e3a25920-24x55=24600\u5143
\u4e8c\u3001\u6c34\u4ea7\u517b\u6b96\u6237\u674e\u5927\u7237\u51c6\u5907\u8fdb\u884c\u5927\u95f8\u87f9\u4e0e\u6cb3\u867e\u7684\u6df7\u5408\u517b\u6b96\uff0c\u4ed6\u4e86\u89e3\u5230\u60c5\u51b5\uff1a
1\u3001\u6bcf\u4ea9\u5730\u6c34\u9762\u7ec4\u5efa\u4e3a500\u5143\uff0c\u3002
2\u3001\u6bcf\u4ea9\u6c34\u9762\u53ef\u5728\u5e74\u521d\u6df7\u5408\u6295\u653e4\u516c\u65a4\u87f9\u82d7\u548c20\u516c\u65a4\u867e\u82d7\uff1b
3\u3001\u6bcf\u516c\u65a4\u87f9\u82d7\u7684\u4ef7\u683c\u4e3a75\u5143\uff0c\u5176\u9972\u517b\u8d39\u7528\u4e3a525\u5143\uff0c\u5f53\u5e74\u53ef\u62161400\u5143\u6536\u76ca\uff1b
4\u3001\u6bcf\u516c\u65a4\u867e\u82d7\u7684\u4ef7\u683c\u4e3a15\u5143\uff0c\u5176\u9972\u517b\u8d39\u7528\u4e3a85\u5143\uff0c\u5f53\u5e74\u53ef\u83b7160\u5143\u6536\u76ca\uff1b
\u95ee\u9898\uff1a
1\u3001\u6c34\u4ea7\u517b\u6b96\u7684\u6210\u672c\u5305\u62ec\u6c34\u9762\u5e74\u79df\u91d1\uff0c\u82d7\u79cd\u8d39\u7528\u548c\u9972\u517b\u8d39\u7528\uff0c\u6c42\u6bcf\u4ea9\u6c34\u9762\u867e\u87f9\u6df7\u5408\u517b\u6b96\u7684\u5e74\u5229\u6da6\uff08\u5229\u6da6=\u6536\u76ca\u2014\u6210\u672c\uff09\uff1b
2\u3001\u674e\u5927\u7237\u73b0\u6709\u8d44\u91d125000\u5143\uff0c\u4ed6\u51c6\u5907\u518d\u5411\u94f6\u884c\u8d37\u6b3e\u4e0d\u8d85\u8fc725000\u5143\uff0c\u7528\u4e8e\u87f9\u867e\u6df7\u5408\u517b\u6b96\uff0c\u5df2\u77e5\u94f6\u884c\u8d37\u6b3e\u7684\u5e74\u5229\u7387\u4e3a10\uff05\uff0c\u8bd5\u95ee\u674e\u5927\u7237\u5e94\u79df\u591a\u5c11\u4ea9\u6c34\u9762\uff0c\u5e76\u5411\u94f6\u884c\u8d37\u6b3e\u591a\u5c11\u5143\uff0c\u53ef\u4f7f\u5e74\u5229\u6da6\u8fbe\u523036600\u5143\uff1f
\u89e3\uff1a1\u3001\u6c34\u9762\u5e74\u79df\u91d1=500\u5143
\u82d7\u79cd\u8d39\u7528=75x4+15x20=300+300=600\u5143
\u9972\u517b\u8d39=525x4+85x20=2100+1700=3800\u5143
\u6210\u672c=500+600+3800=4900\u5143
\u6536\u76ca1400x4+160x20=5600+3200=8800\u5143
\u5229\u6da6\uff08\u6bcf\u4ea9\u7684\u5e74\u5229\u6da6\uff09=8800-4900=3900\u5143
2\u3001\u8bbe\u79dfa\u4ea9\u6c34\u9762\uff0c\u8d37\u6b3e\u4e3a4900a-25000\u5143
\u90a3\u4e48\u6536\u76ca\u4e3a8800a
\u6210\u672c=4900a\u226425000+25000
4900a\u226450000
a\u226450000/4900\u224810.20\u4ea9
\u5229\u6da6=3900a-\uff084900a-25000\uff09\u00d710%
3900a-\uff084900a-25000\uff09\u00d710%=36600
3900a-490a+2500=36600
3410a=34100
\u6240\u4ee5a=10\u4ea9
\u8d37\u6b3e\uff084900x10-25000\uff09=49000-25000=24000\u5143
\u4e09\u3001\u67d0\u7269\u6d41\u516c\u53f8\uff0c\u8981\u5c06300\u5428\u7269\u8d44\u8fd0\u5f80\u67d0\u5730\uff0c\u73b0\u6709A\u3001B\u4e24\u79cd\u578b\u53f7\u7684\u8f66\u53ef\u4f9b\u8c03\u7528\uff0c\u5df2\u77e5A\u578b\u8f66\u6bcf\u8f86\u53ef\u88c520\u5428\uff0cB\u578b\u8f66\u6bcf\u8f86\u53ef\u88c515\u5428\uff0c\u5728\u6bcf\u8f86\u8f66\u4e0d\u8d85\u8f7d\u7684\u6761\u4ef6\u4e0b\uff0c\u628a300\u5428\u7269\u8d44\u88c5\u8fd0\u5b8c\uff0c\u95ee\uff1a\u5728\u5df2\u786e\u5b9a\u8c03\u75285\u8f86A\u578b\u8f66\u7684\u524d\u63d0\u4e0b\u81f3\u5c11\u8fd8\u9700\u8c03\u7528B\u578b\u8f66\u591a\u5c11\u8f86?
\u89e3\uff1a\u8bbe\u8fd8\u9700\u8981B\u578b\u8f66a\u8f86\uff0c\u7531\u9898\u610f\u5f97
20\u00d75+15a\u2265300
15a\u2265200
a\u226540/3
\u89e3\u5f97a\u226513\u53c81/3 \uff0e
\u7531\u4e8ea\u662f\u8f66\u7684\u6570\u91cf\uff0c\u5e94\u4e3a\u6b63\u6574\u6570\uff0c\u6240\u4ee5x\u7684\u6700\u5c0f\u503c\u4e3a14\uff0e
\u7b54\uff1a\u81f3\u5c11\u9700\u898114\u53f0B\u578b\u8f66\uff0e
\u56db\u3001\u67d0\u57ce\u5e02\u5e73\u5747\u6bcf\u5929\u4ea7\u751f\u751f\u6d3b\u5783\u573e700\u5428\uff0c\u5168\u90e8\u7531\u7532\uff0c\u4e59\u4e24\u4e2a\u5783\u573e\u5382\u5904\u7406\uff0c\u5df2\u77e5\u7532\u5382\u6bcf\u5c0f\u65f6\u5904\u7406\u5783\u573e55\u5428\uff0c\u9700\u8d39\u7528550\u5143\uff1b\u4e59\u5382\u6bcf\u5c0f\u65f6\u5904\u7406\u5783\u573e45\u5428\uff0c\u9700\u8d39\u7528495\u5143\u3002\u5982\u679c\u89c4\u5b9a\u8be5\u57ce\u5e02\u5904\u7406\u5783\u573e\u7684\u8d39\u7528\u6bcf\u5929\u4e0d\u8d85\u8fc77370\u5143\uff0c\u7532\u5382\u6bcf\u5929\u81f3\u5c11\u9700\u8981\u5904\u7406\u5783\u573e\u591a\u5c11\u5c0f\u65f6?
\u89e3\uff1a\u8bbe\u7532\u573a\u5e94\u81f3\u5c11\u5904\u7406\u5783\u573ea\u5c0f\u65f6
550a+\uff08700-55a\uff09\u00f745\u00d7495\u22647370
550a+\uff08700-55a\uff09\u00d711\u22647370
550a+7700-605a\u22647370
330\u226455a
a\u22656
\u7532\u573a\u5e94\u81f3\u5c11\u5904\u7406\u5783\u573e6\u5c0f\u65f6
\u4e94\u3001\u5b66\u6821\u5c06\u82e5\u5e72\u95f4\u5bbf\u820d\u5206\u914d\u7ed9\u4e03\u5e74\u7ea7\u4e00\u73ed\u7684\u5973\u751f\u4f4f\u5bbf\uff0c\u5df2\u77e5\u8be5\u73ed\u5973\u751f\u5c11\u4e8e35\u4eba\uff0c\u82e5\u6bcf\u4e2a\u623f\u95f4\u4f4f5\u4eba\uff0c\u5219\u5269\u4e0b5\u4eba\u6ca1\u5904\u53ef\u4f4f\uff1b\u82e5\u6bcf\u4e2a\u623f\u95f4\u4f4f8\u4eba\uff0c\u5219\u7a7a\u51fa\u4e00\u95f4\u623f\uff0c\u5e76\u4e14\u8fd8\u6709\u4e00\u95f4\u623f\u4e5f\u4e0d\u6ee1\u3002\u6709\u591a\u5c11\u95f4\u5bbf\u820d\uff0c\u591a\u5c11\u540d\u5973\u751f\uff1f
\u89e3\uff1a\u8bbe\u6709\u5bbf\u820da\u95f4\uff0c\u5219\u5973\u751f\u4eba\u6570\u4e3a5a+5\u4eba
\u6839\u636e\u9898\u610f
a>0(1)
0<5a+5<35\uff082\uff09
0<5a+5-[8\uff08a-2\uff09]<8(3)
\u7531\uff082\uff09\u5f97
-5<5a<30
-1<a<6
\u7531\uff083\uff09
0<5a+5-8a+16<8
-21<-3a<-13
13/3<a<7
\u7531\u6b64\u6211\u4eec\u786e\u5b9aa\u7684\u53d6\u503c\u8303\u56f4
4\u53c81/3<a<6
a\u4e3a\u6b63\u6574\u6570\uff0c\u6240\u4ee5a=5
\u90a3\u4e48\u5c31\u662f\u67095\u95f4\u5bbf\u820d\uff0c\u5973\u751f\u67095\u00d75+5=30\u4eba
\u516d\u3001\u67d0\u624b\u673a\u751f\u4ea7\u5382\u5bb6\u6839\u636e\u5176\u4ea7\u54c1\u5728\u5e02\u573a\u4e0a\u7684\u9500\u552e\u60c5\u51b5\uff0c\u51b3\u5b9a\u5bf9\u539f\u6765\u4ee5\u6bcf\u90e82000\u5143\u51fa\u552e\u7684\u4e00\u6b3e\u5f69\u5c4f\u624b\u673a\u8fdb\u884c\u8c03\u4ef7\uff0c\u5e76\u6309\u65b0\u5355\u4ef7\u7684\u516b\u6298\u4f18\u60e0\u51fa\u552e\uff0c\u7ed3\u679c\u6bcf\u90e8\u624b\u673a\u4ecd\u53ef\u83b7\u5f97\u5b9e\u9645\u9500\u552e\u4ef7\u768420%\u7684\u5229\u6da6\uff08\u5229\u6da6=\u9500\u552e\u4ef7\u2014\u6210\u672c\u4ef7\uff09.\u5df2\u77e5\u8be5\u6b3e\u624b\u673a\u6bcf\u90e8\u6210\u672c\u4ef7\u662f\u539f\u9500\u552e\u5355\u4ef7\u768460%\u3002
\uff081\uff09\u6c42\u8c03\u6574\u540e\u8fd9\u6b3e\u5f69\u5c4f\u624b\u673a\u7684\u65b0\u5355\u4ef7\u662f\u6bcf\u90e8\u591a\u5c11\u5143\uff1f\u8ba9\u5229\u540e\u7684\u5b9e\u9645\u9500\u552e\u4ef7\u662f\u6bcf\u90e8\u591a\u5c11\u5143\uff1f
\u89e3\uff1a\u624b\u673a\u539f\u6765\u7684\u552e\u4ef7=2000\u5143/\u90e8
\u6bcf\u90e8\u624b\u673a\u7684\u6210\u672c=2000\u00d760%=1200\u5143
\u8bbe\u6bcf\u90e8\u624b\u673a\u7684\u65b0\u5355\u4ef7\u4e3aa\u5143
a\u00d780%-1200=a\u00d780%\u00d720%
0.8a-1200=0.16a
0.64a=1200
a=1875\u5143
\u8ba9\u5229\u540e\u7684\u5b9e\u9645\u9500\u552e\u4ef7\u662f\u6bcf\u90e81875\u00d780%=1500\u5143
\uff082\uff09\u4e3a\u4f7f\u4eca\u5e74\u6309\u65b0\u5355\u4ef7\u8ba9\u5229\u9500\u552e\u7684\u5229\u6da6\u4e0d\u4f4e\u4e8e20\u4e07\u5143\uff0c\u4eca\u5e74\u81f3\u5c11\u5e94\u9500\u552e\u8fd9\u6b3e\u5f69\u5c4f\u624b\u673a\u591a\u5c11\u90e8\uff1f
20\u4e07\u5143=200000\u5143
\u8bbe\u81f3\u5c11\u9500\u552eb\u90e8
\u5229\u6da6=1500\u00d720%=300\u5143
\u6839\u636e\u9898\u610f
300b\u2265200000
b\u22652000/3\u2248667\u90e8
\u81f3\u5c11\u751f\u4ea7\u8fd9\u79cd\u624b\u673a667\u90e8\u3002
\u4e03\u3001\u6211\u5e02\u67d0\u6751\u8ba1\u5212\u5efa\u9020A,B\u4e24\u79cd\u578b\u53f7\u7684\u6cbc\u6c14\u6c60\u517120\u4e2a\uff0c\u4ee5\u89e3\u51b3\u8be5\u6751\u6240\u6709\u519c\u6237\u7684\u71c3\u6599\u95ee\u9898.\u4e24\u79cd\u578b\u53f7\u7684\u6cbc\u6c14\u6c60\u7684\u5360\u5730\u9762\u79ef\uff0c\u4f7f\u7528\u519c\u6237\u6570\u4ee5\u53ca\u9020\u4ef7\u5982\u4e0b\u8868\uff1a
\u578b\u53f7 \u5360\u5730\u9762\u79ef\uff08\u5e73\u65b9\u7c73/\u4e2a\uff09 \u4f7f\u7528\u519c\u6237\u6570\uff08\u6237/\u4e2a\uff09 \u9020\u4ef7\uff08\u4e07\u5143/\u4e2a\uff09
A 15 18 2
B 20 30 3
\u5df2\u77e5\u53ef\u4f9b\u5efa\u9020\u7684\u6cbc\u6c14\u6c60\u5360\u5730\u9762\u79ef\u4e0d\u8d85\u8fc7365\u5e73\u65b9\u7c73\uff0c\u8be5\u6751\u5171\u6709492\u6237.
\uff081\uff09.\u6ee1\u8db3\u6761\u4ef6\u7684\u65b9\u6cd5\u6709\u51e0\u79cd\uff1f\u5199\u51fa\u89e3\u7b54\u8fc7\u7a0b.
\uff082\uff09.\u901a\u8fc7\u8ba1\u7b97\u5224\u65ad\u54ea\u79cd\u5efa\u9020\u65b9\u6848\u6700\u7701\u94b1\uff1f
\u89e3: (1) \u8bbe\u5efa\u9020A\u578b\u6cbc\u6c14\u6c60 x \u4e2a\uff0c\u5219\u5efa\u9020B \u578b\u6cbc\u6c14\u6c60(20\uff0dx )\u4e2a
18x+30(20-x) \u2265492
18x+600-30x\u2265492
12x\u2264108
x\u22649
15x+20(20-x)\u2264365
15x+400-20x\u2264365
5x\u226535
x\u22647
\u89e3\u5f97\uff1a7\u2264 x \u2264 9
\u2235 x\u4e3a\u6574\u6570 \u2234 x = 7\uff0c8 \uff0c9 \uff0c\u2234\u6ee1\u8db3\u6761\u4ef6\u7684\u65b9\u6848\u6709\u4e09\u79cd\uff0e
(2)\u8bbe\u5efa\u9020A\u578b\u6cbc\u6c14\u6c60 x \u4e2a\u65f6\uff0c\u603b\u8d39\u7528\u4e3ay\u4e07\u5143\uff0c\u5219\uff1a
y = 2x + 3( 20\uff0dx) = \uff0dx+ 60
\u2235\uff0d1< 0\uff0c\u2234y \u968fx \u589e\u5927\u800c\u51cf\u5c0f\uff0c
\u5f53x=9 \u65f6\uff0cy\u7684\u503c\u6700\u5c0f\uff0c\u6b64\u65f6y= 51( \u4e07\u5143 )
\u2234\u6b64\u65f6\u65b9\u6848\u4e3a\uff1a\u5efa\u9020A\u578b\u6cbc\u6c14\u6c609\u4e2a\uff0c\u5efa\u9020B\u578b\u6cbc\u6c14\u6c6011\u4e2a
\u89e3\u6cd5\u2461:\u7531(1)\u77e5\u5171\u6709\u4e09\u79cd\u65b9\u6848\uff0c\u5176\u8d39\u7528\u5206\u522b\u4e3a\uff1a
\u65b9\u6848\u4e00: \u5efa\u9020A\u578b\u6cbc\u6c14\u6c607\u4e2a\uff0c \u5efa\u9020B\u578b\u6cbc\u6c14\u6c6013\u4e2a\uff0c
\u603b\u8d39\u7528\u4e3a:7\u00d72 + 13\u00d73 = 53( \u4e07\u5143 )
\u65b9\u6848\u4e8c: \u5efa\u9020A\u578b\u6cbc\u6c14\u6c608\u4e2a\uff0c \u5efa\u9020B\u578b\u6cbc\u6c14\u6c6012\u4e2a\uff0c
\u603b\u8d39\u7528\u4e3a:8\u00d72 + 12\u00d73 = 52( \u4e07\u5143 )
\u65b9\u6848\u4e09: \u5efa\u9020A\u578b\u6cbc\u6c14\u6c609\u4e2a\uff0c \u5efa\u9020B\u578b\u6cbc\u6c14\u6c6011\u4e2a\uff0c
\u603b\u8d39\u7528\u4e3a:9\u00d72 + 11\u00d73 = 51( \u4e07\u5143 )
\u2234\u65b9\u6848\u4e09\u6700\u7701\u94b1.
\u516b\u3001\u628a\u4e00\u4e9b\u4e66\u5206\u7ed9\u51e0\u4e2a\u5b66\u751f,\u5982\u679c\u6bcf\u4eba\u52063\u672c,\u90a3\u4e48\u4f598\u672c;\u5982\u679c\u524d\u9762\u7684\u6bcf\u4e2a\u5b66\u751f\u52065\u672c,\u90a3\u4e48\u6700\u540e\u4e00\u4eba\u5c31\u5206\u4e0d\u52303\u672c.\u8fd9\u4e9b\u4e66\u6709\u591a\u5c11\u672c?\u5b66\u751f\u6709\u591a\u5c11\u4e2a?
\u89e3\uff1a\u8bbe\u5b66\u751f\u6709a\u4eba
\u6839\u636e\u9898\u610f
3a+8-5(a-1)<3(1)
3a+8-5(a-1)>0(2)
\u7531\uff081\uff09
3a+8-5a+5<3
2a>10
a>5
\u7531\uff082\uff09
3a+8-5a+5>0
2a<13
a<6.5
\u90a3\u4e48a\u7684\u53d6\u503c\u8303\u56f4\u4e3a5<a<6.5
\u90a3\u4e48a=6
\u67096\u4e2a\u5b66\u751f\uff0c\u4e66\u67093\u00d76+8=26\u672c
\u4e5d\u3001\u67d0\u6c34\u4ea7\u54c1\u5e02\u573a\u7ba1\u7406\u90e8\u95e8\u89c4\u5212\u5efa\u9020\u9762\u79ef\u4e3a2400m²\u7684\u96c6\u8d38\u5927\u68da\u3002\u5927\u68da\u5185\u8bbeA\u79cd\u7c7b\u578b\u548cB\u79cd\u7c7b\u578b\u7684\u5e97\u9762\u517180\u95f4\u3002\u6bcf\u95f4A\u79cd\u7c7b\u578b\u7684\u5e97\u9762\u7684\u5e73\u5747\u9762\u79ef\u4e3a28m²\u6708\u79df\u8d39\u4e3a400\u5143\uff1b\u6bcf\u95f4B\u79cd\u7c7b\u578b\u7684\u5e97\u9762\u7684\u5e73\u5747\u9762\u79ef\u4e3a20m²\u6708\u79df\u8d39\u4e3a360\u5143\u3002\u5168\u90e8\u5e97\u9762\u7684\u5efa\u9020\u9762\u79ef\u4e0d\u4f4e\u4e8e\u5927\u68da\u603b\u9762\u79ef\u768480\uff05\uff0c\u53c8\u4e0d\u80fd\u8d85\u8fc7\u5927\u68da\u603b\u9762\u79ef\u768485\uff05\u3002\u8bd5\u786e\u5b9a\u6709\u51e0\u79cd\u5efa\u9020A,B\u4e24\u79cd\u7c7b\u578b\u5e97\u9762\u7684\u65b9\u6848\u3002
\u89e3\uff1a\u8bbeA\u79cd\u7c7b\u578b\u5e97\u9762\u4e3aa\u95f4\uff0cB\u79cd\u4e3a80-a\u95f4
\u6839\u636e\u9898\u610f
28a+20\uff0880-a\uff09\u22652400\u00d780%(1)
28a+20\uff0880-a\uff09\u22642400\u00d785%(2)
\u7531\uff081\uff09
28a+1600-20a\u22651920
8a\u2265320
a\u226540
\u7531\uff082\uff09
28a+1600-20a\u22642040
8a\u2264440
a\u226455
40\u2264a\u226455
\u65b9\u6848\uff1a A B
40 40
41 39
\u2026\u2026
55 25
\u4e00\u5171\u662f55-40+1=16\u79cd\u65b9\u6848
\u5341\u3001\u67d0\u5bb6\u5177\u5e97\u51fa\u552e\u684c\u5b50\u548c\u6905\u5b50\uff0c\u5355\u4ef7\u5206\u522b\u4e3a300\u5143\u4e00\u5f20\u548c60\u5143\u4e00\u628a\uff0c\u8be5\u5bb6\u5177\u5e97\u5236\u5b9a\u4e86\u4e24\u79cd\u4f18\u60e0\u65b9\u6848\uff1a\uff081\uff09\u4e70\u4e00\u5f20\u684c\u5b50\u8d60\u9001\u4e24\u628a\u6905\u5b50\uff1b\uff082\uff09\u6309\u603b\u4ef7\u768487.5%\u4ed8\u6b3e\u3002\u67d0\u5355\u4f4d\u9700\u8d2d\u4e705\u5f20\u684c\u5b50\u548c\u82e5\u5e72\u628a\u6905\u5b50\uff08\u4e0d\u5c11\u4e8e10\u628a\uff09\u3002\u5982\u679c\u5df2\u77e5\u8981\u8d2d\u4e70X\u628a\u6905\u5b50\uff0c\u8ba8\u8bba\u8be5\u5355\u4f4d\u8d2d\u4e70\u540c\u6837\u591a\u7684\u6905\u5b50\u65f6\uff0c\u9009\u62e9\u54ea\u4e00\u79cd\u65b9\u6848\u66f4\u7701\u94b1\uff1f
\u8bbe\u9700\u8981\u4e70x\uff08x\u226510\uff09\u628a\u6905\u5b50\uff0c\u9700\u8981\u82b1\u8d39\u7684\u603b\u524d\u6570\u4e3ay
\u7b2c\u4e00\u79cd\u65b9\u6848\uff1a
y=300x5+60\u00d7\uff08x-10\uff09=1500+60x-600=900+60x
\u7b2c\u4e8c\u79cd\u65b9\u6848\uff1a
y=\uff08300x5+60x\uff09\u00d787.5%=1312.5+52.5x
\u82e5\u4e24\u79cd\u65b9\u6848\u82b1\u94b1\u6570\u76f8\u7b49\u65f6
900+60x=1312.5+52.5x
7.5x=412.5
x=55
\u5f53\u4e7055\u628a\u6905\u5b50\u65f6\uff0c\u4e24\u79cd\u65b9\u6848\u82b1\u94b1\u6570\u76f8\u7b49
\u5927\u4e8e55\u628a\u65f6\uff0c\u9009\u62e9\u7b2c\u4e8c\u79cd\u65b9\u6848
\u5c0f\u4e8e55\u628a\u65f6\uff0c\u9009\u62e9\u7b2c\u4e00\u79cd\u65b9\u6848
2 0.52x-(1-0.52)x=80
3 x/2+3x/2=7
4 3x+7=32-2x
5 3x+5(138-x)=540
6 3x-7(x-1)=3-2(x+3)
7 18x+3x-3=18-2(2x-1)
8 3(20-y)=6y-4(y-11)
9 -(x/4-1)=5
10 3[4(5y-1)-8]=6
张王李赵四人联合为奥运会捐款，张出的钱是王李赵总和的四分之一，王出的钱是张李总和的二十三分之七，李出的钱是张王赵的总和的十一分之四，赵出了90000元，张出了多少钱？
一
方程两边同乘以30
6x-12x-3x-9-20x+50-90=0
x=-61/17
二
方程两边同乘以100
4-6x-650=100-x-750
整理得：
x=4/5
三
这个比较复杂，将括号外的都乘进括号里
1/6[1/4（x/5-1)-6]+2=1
x/120-1/24-1/4+2=1
整理得：x=-70
是一元一次 还是二元一次？
请问是应用题吗？
绛旓細9 -(x/4-1)=5 10 3[4(5y-1)-8]=6
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