七年级下册二元一次方程纯计算题题

1、年级下册二元次方程纯计算题100题1.23x+9y=812.9x+4y=353.7x+2y=5；=348x+3y=307x+4y=624.4x+6y=545.2x+y=76.x+2y=219x+2y=872x+5y=193x+5y=5617.5:+7y=528.5x+5y=659.8x+4y=5i55x+2y=227x+7y=203x+4y=2110.5x+7y=4111.7x+5y=5412.x+8y=5 5x+8y=443x+4y=384x+y=29 ”13.3i+6y=2414.9x+2y=6215.9x+4y=469x+5y=464x+3y=367x+4y=42116.9k+7y=13

2、517.3x+8y=5118.9x+3y=94x+y=41x+6y=274x+7y=9519.9x+2y=3820.5x+5y=4521.8x+2y=283x+6y=187x+9y=697x+8y=6221.&+2y=2822.x+6y=1423.7x+4y=67j7x+8y=623x+3y=272x+8y=26124.5X+4y=5225.7x+y=926.6x+6y=487x+6y=744x+6y=166x+3y=42127.8+2y=1628.4x+9y=7729.6x+8y=68 (i7x+y=118x+6y=947x+6y=6630.2x+2y=2231.5x+3y=832.6x-7

3、y=57x+2y=473x+5y=8x+2y=433.10 x-8y=1434.4x+7y=335.3x+y=10 x+y=36.4I5x+y=07x-y=204x+10y=2737.8x-y=038.11x-y=12i x+y=1x+y=1811y-x=-1239.5k+6y=2740.7x-2y=441.(2x+y)-5y=22x+3y=12x+2y=122x-5y=042.7x-3y=343.7x+2y=2144.10 x-8y=03x+2y=21y-6x=13x-2y=245.3x+y=1046.3x-2y=147.y-3x=25x-7y=8x-y=3x-2y=648.9x-3y=12

4、49.x+3y=-5502x+3y=72x+y=63x-4y=-23x+2y=3*513) x+y=+2y=1852.2x-5y=153.x+8y=427x+y=33x-4y=-20543x-5y=22x-y=34x55、4x3y 5 56.6y 1417y23y63广c 59.57co 23x 58.17xx y 457.2x y 13x 2y 62x 3y 1713x 16y 012x 25 y 103460.3x 2y 12x 3y 8 TOC o 1-5 h z 3 61.35x 2y 12563 x 1 5(y 2)3(2x 5) 4(3y 4)3x 2y 47653x 2y 196

5、7、x y 85x 2(x y) 169、5x 2y 83x y 762.2R+9y=81 3x+34x 2 464 2(y 3) 666.5x+7y=525x+2y=2268.4k+6y=54 9x+2y=87+5y=65=20367j2x+y=7 2x+5y=1979.19x-32y=-178675k+y=495080|97x+24y=7202*58xy=290081.42x+85y=636263x-y=163882 f85x-92y=-251827x-y=48671户x+4y=56 x+4y=2172|3x+8y=51 x+6y=2773.9x+3y=9918k+23y=230375.1

6、8x+23y=2303 44l+90y=779676.67x+54y=8546 7ll-y=568077.42x-95y=-1410 21x-y=157574 47x-40y=853 34x-y=200674|66x+17y=396725x+y=120083f79x+40y=241956x-y=117684f80 x-87y=215622xy=8808可32x+62y=5134 57x+y=285086f83x-49y=8259x+y=2183m n87 34m n2331388 5x 2y为已知数)；4x 4y 6ax y 3x 4y89、25;7 1290 x(y 1) y(i x) 2 ，.、2_x(x 1) y x 091、3x 3y 3x 2y 225.3(2x 3y)2(3x 2y)25236x 2 y 192、32x 2 1 y32x y z 13y z x 1 ； z x y 3x y 16y z 12 ；z x 103x y 4z 135x y 3z