初二数学二元一次方程组专项练习题 131Word格式文档下载.docx
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2a=b+202x-y=-7
3a=7b-97x+3y=-4
x-4y=810.8x-0.9y=3.3
6y+3x=810.7x-0.2y=0.3
3a=7b-126x-7y=10
a=5b-87x=7y+19
8x-9y=328m+7b=15
5y+4x=32-3m+7b=6
9a=7b+19x-3y=0
6a=6b-162x+5y=9
9x-6y=1240.1x+0.6y=2.3
3y+5x=1240.3x-0.3y=3
5a=6b-149x+3y=15
a=9b+137x=y+4
x-6y=1996m+7b=2
4y+4x=199-10m+2b=17
3a=8b+16x+5y=-3
7a=b-176x-9y=-2
8x+2y=1260.7x+0.9y=1.8
6y+9x=1260.2x+0.7y=2.6
5a=9b+179x-7y=10
6a=b+144x=2y+15
2x+2y=1154m+8b=1
4y-6x=115-5m+3b=27
2a=b+4x+5y=-6
8a=b+73x-9y=-8
5x-7y=1790.5x-0.5y=0.5
7y+7x=1790.4x-0.2y=4
2a=9b+68x-7y=6
a=9b-97x=3y+19
9x-6y=1976m+3b=26
9y+2x=197-3m-4b=1
6a=b-59x-5y=8
2a=8b-96x-6y=-5
4x+7y=220.6x+0.8y=0.7
2y-x=220.8x-0.7y=0.4
6a=9b-167x-2y=12
3a=8b-75x=4y+9
6x+y=1664m-4b=17
y+3x=166-1m+3b=22
2a=7b-187x-5y=-3
9a=b+19x-3y=4
3x-3y=1910.9x+0.2y=1.4
2y-x=1910.8x-0.1y=0.5
3a=8b-125x-2y=2
5a=9b+145x=2y+4
3x+3y=-75m+5b=4
6y-7x=-7-7m-6b=22
2a=5b-86x-7y=-10
a=3b-57x+5y=8
4x+9y=280.3x+0.7y=2.2
5y+8x=280.2x+0.7y=4
6a=4b+202x+8y=15
8a=9b+56x=4y+3
4x+y=150m-b=17
9y-4x=150-9m+8b=11
4a=5b-167x-5y=5
7a=9b-193x-y=-9
3x+2y=850.9x+0.3y=2
8y+5x=850.5x-0.2y=1.7
2a=6b+43x-8y=18
5a=6b+169x=7y-1
2x+3y=963m+6b=25
6y-2x=96-8m+8b=27
6a=8b+64x-6y=-3
9a=b+92x+9y=3
8x-5y=560.2x+0.2y=3.7
4y-5x=560.8x-0.4y=1.2