谁有二元一次方程组的题啊,50道,别太简单了 50道二元一次方程组计算题,谁有啊?不是应用题!!!谢谢!!...
\u8dea\u6c4250\u9053\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u7ec4\u9898\u3002\u4e00\uff0e\u586b\u7a7a\u9898\uff0810\u00d73\u2032=30\u2032\uff09
1\u3001\u65b9\u7a0b\u4e2d\u542b\u6709\uff3f\u4e2a\u672a\u77e5\u6570\uff0c\u5e76\u4e14\uff3f\uff3f\u7684\u6b21\u6570\u662f1\uff0c\u8fd9\u6837\u7684\u65b9\u7a0b\u662f\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u3002
2\u3001\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u7ec4\u7684\u89e3\u9898\u601d\u60f3\u662f\uff3f\uff3f\uff3f\uff3f\uff3f\uff3f\uff0c\u65b9\u6cd5\u6709\uff3f\uff3f\uff3f\uff0c\uff3f\uff3f\uff3f\u6cd5\u3002
3\u3001\u5c06\u65b9\u7a0b10\uff0d2\uff083-y\uff09=3\uff082-x\uff09\u53d8\u5f62\uff0c\u7528\u542bx\u7684\u4ee3\u6570\u5f0f\u8868\u793ay\u662f\uff3f\uff3f\uff3f\uff3f\uff3f\u3002
4\u3001\u5df2\u77e53x2a+b\uff0d3\uff0d5y3a\uff0d2b+2=-1\u662f\u5173\u4e8ex\u3001y\u7684\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\uff0c\u5219\uff08a+b\uff09b=\uff3f\uff3f\uff3f\u3002
5\u3001\u5728\u516c\u5f0fs=v0t+12 at2\u4e2d, \u5f53t\uff1d1\u65f6\uff0cs=13,\u5f53t=2\u65f6\uff0cs=42\uff0c\u5219t=5\u65f6\uff0cs=_____\u3002
6\u3001\u5df2\u77e52x3m-2n+2ym+n\u4e0e12 x5y4n+1\u662f\u540c\u7c7b\u9879\uff0c\u5219m=_____\uff0cn=_____\u3002
7\u3001\u5199\u51fa2x+3y=12\u7684\u6240\u6709\u975e\u8d1f\u6574\u6570\u89e3\u4e3a_______________________________\u3002
8\u3001\u5df2\u77e5 \u662f\u65b9\u7a0b2x\uff0d3y=1\u7684\u89e3\uff0c\u5219\u4ee3\u6570\u5f0f2m-63n-5 \u7684\u503c\u4e3a_____\u3002
\u4e8c\uff0e\u9009\u62e9\u9898\uff0810\u00d73\u2032=30\u2032\uff09
11\u3001\u67d0\u6821150\u540d\u5b66\u751f\u53c2\u52a0\u6570\u5b66\u8003\u8bd5\uff0c\u4eba\u5e73\u5747\u520655\u5206\uff0c\u5176\u4e2d\u53ca\u683c\u5b66\u751f\u5e73\u574777\u5206\uff0c\u4e0d\u53ca\u683c\u5b66\u751f\u5e73\u574747\u5206\uff0c\u5219\u4e0d\u53ca\u683c\u5b66\u751f\u4eba\u6570\u4e3a\uff08 \uff09
A 49 B 101 C 110 D 40
12\u3001\u5df2\u77e5x+2y+3z=54\uff0c3x+y+2z=47\uff0c2x+3y+z=31\uff0c\u90a3\u4e48\u4ee3\u6570\u5f0fx+y+z\u7684\u503c\u662f\uff08\u3000\u3000\uff09
A\u3001132B\u300132C\u300122D\u300117
13\u3001\u82e52x\u2502m\u2502+\uff08m+1\uff09y=3m-1\u662f\u5173\u4e8ex\u3001y\u7684\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\uff0c\u5219m\u7684\u53d6\u503c\u8303\u56f4\u662f\uff08\u3000\u3000\uff09 A\u3001m\u2260\uff0d1B\u3001m=\u00b11C\u3001m=1D\u3001m=0
14\u3001\u82e5\u65b9\u7a0b\u7ec4 \u7684\u89e3\u4e2d\u7684x\u503c\u6bd4y\u7684\u503c\u7684\u76f8\u53cd\u6570\u59271\uff0c\u5219k\u4e3a\uff08\u3000\u3000\uff09
A\u30013 B\u3001\uff0d3 C\u30012 D\u3001\uff0d2
15\u3001\u4e0b\u5217\u65b9\u7a0b\u7ec4\u4e2d\uff0c\u5c5e\u4e8e\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u7ec4\u7684\u662f\uff08 \uff09
A\u3001 B\u3001 C\u3001 D\u3001
16\u3001\u82e5 \u4e0e \u662f\u540c\u7c7b\u9879\uff0c\u5219 \uff08 \uff09
A\u3001-3B\u30010C\u30013D\u30016
绛旓細绛旀锛歺=50 y=59 (19) 54x+68y=3284 78x+y=1404 绛旀锛歺=18 y=34 (20) 70x+13y=3520 52x+y=2132 绛旀锛歺=41 y=50 (21) 48x-54y=-3186 24x+y=1080 绛旀锛歺=45 y=99 (22) 36x+77y=7619 47x-y=799 绛旀锛歺=17 y=91 (23) 13x-42y=-2717 31x-y=1333 绛旀锛歺...
绛旓細鍏充簬浜屽厓涓娆℃柟绋嬬粍50閬撻锛10閬撲簩鍏冧竴娆℃柟绋嬬粍缁冧範棰樺惈杩囩▼杩欎釜寰堝浜鸿繕涓嶇煡閬擄紝浠婂ぉ鏉ヤ负澶у瑙g瓟浠ヤ笂鐨勯棶棰橈紝鐜板湪璁╂垜浠竴璧锋潵鐪嬬湅鍚э紒1銆亄1) x+y=4鈶爔-y=2鈶+鈶★細2x=6x=3x=3浠e叆鈶狅細3+y=4y=1(2) x+2y=32 鈶 x-y=8 鈶 鐢扁憼寰,x=32-2y 鈶 鎶娾憿浠e叆鈶 32-2y-y=832-3y=83...
绛旓細58x-y=2900 绛旀锛歺=50 y=98 10銆42x+85y=6362 63x-y=1638 绛旀锛歺=26 y=62
绛旓細绛旀锛歺=50 y=59 (19) 54x+68y=3284 78x+y=1404 绛旀锛歺=18 y=34 (20) 70x+13y=3520 52x+y=2132 绛旀锛歺=41 y=50 (21) 48x-54y=-3186 24x+y=1080 绛旀锛歺=45 y=99 (22) 36x+77y=7619 47x-y=799 绛旀锛歺=17 y=91 (23) 13x-42y=-2717 31x-y=1333 绛旀锛歺...
绛旓細5x+3y=8,3x+5y=8 6x-7y=5,x+2y=4 10x-8y=14,x+y=5 4x+7y=3,x+y=0 3x+y=10,7x-y=20 44x+10y=27,x+y=1 8x-y=0,x+y=18 11x-y=12,11y-x=-12 5x+6y=27,2x+3y=12 7x-2y=4,x+2y=12 (2x+y)-5y=2,2x-5y=0 7x-3y=3,3x+2y=21 7x+2y=21,y-6x=1 10x...
绛旓細8x+3y=30 3.7x+2y=52 7x+4y=62 4.4x+6y=54 9x+2y=87 5.2x+y=7 2x+5y=19 6.x+2y=21 3x+5y=56 7.5x+7y=52 5x+2y=22 8.5x+5y=65 7x+7y=203 9.8x+4y=56 x+4y=21 10.5x+7y=41 5x+8y=44 11.7x+5y=54 3x+4y=38 12.x+8y=15 4x+y=29 13.3x+6y=24 9x+5y...
绛旓細2. 5x-6y=-3 鈶 x+2y=25 鈶 鎶娾憽*3+鈶犲緱 8x=72 x=9 鎶妜=9浠e叆鈶犺В寰 y=8 鈭村師鏂圭▼缁勭殑瑙d负锝泋=9 y=8 3. 3x+2y=23 鈶 x+y=9 鈶 鐢扁憽寰梮=9-y 鈶 鎶娾憿浠e叆鈶犲緱 3锛9-y锛+2y=23 瑙e緱y=4 鎶妝=4浠e叆鈶㈠緱 x=5 鈭村師鏂圭▼缁勭殑瑙d负锝泋=5 y=4 ...
绛旓細绛旀锛歺=50 y=57 (15) 83x-49y=82 59x+y=2183 绛旀锛歺=37 y=61 (16) 91x+70y=5845 95x-y=4275 绛旀锛歺=45 y=25 (17) 29x+44y=5281 88x-y=3608 绛旀锛歺=41 y=93 (18) 25x-95y=-4355 40x-y=2000 绛旀锛歺=50 y=59 (19) 54x+68y=3284 78x+y=1404 绛旀锛歺=...
绛旓細绛旀锛歺=50 y=57 (15) 83x-49y=82 59x+y=2183 绛旀锛歺=37 y=61 (16) 91x+70y=5845 95x-y=4275 绛旀锛歺=45 y=25 (17) 29x+44y=5281 88x-y=3608 绛旀锛歺=41 y=93 (18) 25x-95y=-4355 40x-y=2000 绛旀锛歺=50 y=59 (19) 54x+68y=3284 78x+y=1404 绛旀锛歺=...
绛旓細绛旀锛歺=41 y=50 (21) 48x-54y=-3186 24x+y=1080 绛旀锛歺=45 y=99 (22) 36x+77y=7619 47x-y=799 绛旀锛歺=17 y=91 (23) 13x-42y=-2717 31x-y=1333 绛旀锛歺=43 y=78 (24) 28x+28y=3332 52x-y=4628 绛旀锛歺=89 y=30 (25) 62x-98y=-2564 46x-y=2024 绛旀锛歺...