初二数学二元一次方程组专项练习题 39Word格式文档下载.docx
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7a=7b+19x-2y=-1
6a=2b-24x-7y=7
5x+6y=1750.1x+0.4y=2.8
6y+8x=1750.8x+0.4y=2.1
4a=7b-156x+7y=9
3a=9b-94x=9y+4
9x-2y=1628m+2b=3
2y+5x=162-6m-5b=8
8a=9b-45x+9y=-7
8a=5b+53x-2y=-2
x+y=1090.7x-0.8y=2.2
2y+4x=1090.1x-0.9y=3.4
7a=b+94x-7y=5
9a=2b+196x=5y-8
x+3y=758m-9b=20
2y+3x=75-6m+6b=28
4a=5b+17x-9y=4
2a=8b-6x-8y=-9
5x+3y=1900.5x-0.7y=0.6
y+5x=1900.5x-0.9y=3.2
2a=5b-195x-8y=4
7a=9b-2x=y+11
2x-4y=1128m-9b=1
2y-8x=112-7m-3b=5
5a=5b-193x-y=-2
2a=2b+122x+3y=-5
2x+5y=890.4x+0.5y=3.3
2y+5x=890.1x+0.2y=3.4
a=4b-136x+4y=10
5a=4b-78x=5y-1
x+7y=146m+3b=6
6y-x=14-3m+9b=4
a=4b+13x-2y=-5
9a=7b+182x+3y=-6
8x+6y=1850.7x+0.1y=0.8
7y+8x=1850.2x-0.7y=3
3a=4b-36x+5y=4
4a=3b+122x=9y-9
6x-9y=1488m-7b=11
6y-4x=148-10m+b=2
9a=2b-112x-8y=-10
a=2b+87x-3y=5
x-9y=500.5x+0.3y=3.1
7y+2x=500.2x+0.2y=2.6
8a=5b+102x+7y=5
4a=2b-176x=7y+19
9x-y=483m-3b=6
7y-2x=48-4m+8b=16
7a=2b-63x+4y=-8
8a=2b+19x+8y=-2
3x+9y=1640.1x-0.1y=3.1
8y-3x=1640.4x-0.7y=0.4
3a=6b-24x-y=2
5a=8b-59x=8y+8
5x+6y=1454m+2b=16
2y-4x=145-7m-8b=20
9a=5b+46x+8y=0
7a=4b+85x+4y=3
5x-2y=1940.1x+0.3y=0.2
4y-2x=1940.1x-0.8y=3.2
5a=9b+27x+6y=7
7a=b+13x=6y+5
2x+4y=334m-6b=26
2y-4x=33-4m+2b=27
4a=9b+174x-9y=-5
6a=3b+55x+7y=0
6x+3y=650.9x+0.6y=1
8y+2x=650.4x-0.5y=0.1