数学： 15x-10=8x+11 5x+6x-6=36-3x 9×(x-4)=45+6x 23x-21+49+3x

14x+6(11-x)=54 5x+8(15-x)=90 4x-2(10-x)=14 6x-3(15-x)=36 0.5x+4(10-x)=100 5x-3(12-x)=28 \u89e3\u65b9\u7a0b

14x+6(11-x)=54
\u89e3\u65b9\u7a0b\uff1a14X+66-6X=54
8X=54-66
8X=-12
X=-3/2
5x+8(15-x)=90
\u89e3\u65b9\u7a0b\uff1a5X+120-8X=90
-3X=90-120
3X=30
X=10
4x-2(10-x)=14
\u89e3\u65b9\u7a0b\uff1a4X-20-2X=14
2X=14+20
2X=34
X=34\u00f72
X=17
6x-3(15-x)=36
\u89e3\u65b9\u7a0b\uff1a6X-45+3X=36
9X=36+45
X=81\u00f79
X=9
0.5x+4(10-x)=100
\u89e3\u65b9\u7a0b\uff1a0.5X+40-4X=100
3.5X=-60
X=-60\u00f73.5
X=-600/35
5x-3(12-x)=28
\u89e3\u65b9\u7a0b:5X-36+3X=28
8X=28+36
X=64\u00f78
X=8

1\uff1aX\u00d72+5=15
2\uff1a6X+5=11
3\uff1aX-0.8X=6
4\uff1a19y+y=40
5\uff1a25-5x=15
6\uff1a79y+y=80
7\uff1a42x+28x=140
8\uff1a3x-1=8
9: 90y-90=90
10: 80y-90=70
11: 78y+2y=160
12: 88-x=80
13: 9-4x=1
14: 20x=40
15: 65y-30=100
16: 51y-y=100
17: 6X-3X=18
18: 1.5x+18=3x
19: 5\u00d73-x\u00f72=8
20: 0.273\u00f7x=0.35
21: 1.8x=0.972
22: x\u00f70.756=90
23: 9x-40=5
24: x\u00f75+9=21
25: 48-27+5x=31
26: 10.5+x+21=56
27: x+2x+18=78
28: (200-x)\u00f75=30
29: (x-140)\u00f770=4
30: 0.1(x+6)=3.3\u00d70.4
31: 4(x-5.6)=1.6
32: 7(6.5+x)=87.5
33: (27.5-3.5)\u00f7x=4
34: 3X+5X=48
35: 14X-8X=12
36: 6x5+2X=44
37: 20X-50=50
38: 28+6X=88
39: 32-22X=10
40: 24-3X=3
41: 10X\uff085+1\uff09=60
42: 99X=100-X
43: X+3=18
44: X-6=12
45: 56-2X=20
46: 4y+2=6
47: x+32=76
48: 3x+6=18
49: 16+8x=40
50: 2x-8=8
51: 4x-3*9=29
52: 8x-3x=105
53: x-6*5=42
54: x+5=7
55: 2x+3=10
56: 12x-9x=9
57: 6x+18=48
58: 56x-50x=30
59: 5x=15
60: 78-5x=28
61: 32y-29=3
62: 5x+5=15
63: 89x-9=80
64: 100-20x=20
65: 55x-25x=60
66: 76y-75=1
67: 23y-23=23
68: 4x-20=0
69: 80y+20=100
70: 17:85y+1=-86
71: 18:45x-50=40
72: 5x=15
73: 78-5x=28
74: 32y-29=3
75: 5x+5=15
76: 89x-9=80

15x-10=8x+11 ;
7x=21;
x=3;
5x+6x-6=36-3x;
14x=42;
x=3;
9×(x-4)=45+6x;
9x-36=45+6x;
3x=81;
x=27;
23x-21=49+3x
20x=70;
x=3.5;

如果本题有什么不明白可以追问，如果满意记得采纳
如果有其他问题请采纳本题后另发点击向我求助，答题不易，请谅解，谢谢。
祝学习进步

就这样。

15x-10=8x+11 ;
7x=21;
x=3;

5x+6x-6=36-3x;
14x=42;
x=3;

9×(x-4)=45+6x;
9x-36=45+6x;
3x=81;
x=27;

23x-21=49+3x
20x=70;
x=3.5;

扩展阅读：数学趣味小故事1-2分钟 ... 4（x-16）=8 ... 小学数学公式大全 ... oppofind x6 ... 8x-4 14 0的方程 ... 8x-3x 105解方程 ... 8x-5x 2.1解方程图片 ... 1-2年级数学小故事 ... 4x+3y 100怎么解 ...