北师大版八年级数学下册解二元一次方程组练习题精选 31文档格式.docx
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2a=9b+86x-3y=-9
a=4b+178x+9y=-1
6x-8y=980.7x+0.2y=1
6y+4x=980.2x-0.1y=3.7
7a=4b+14x+3y=2
9a=3b-144x=4y-13
8x-2y=1627m-8b=20
4y+2x=162-6m+5b=26
6a=9b-6x-2y=-6
5a=8b-205x+3y=10
8x-9y=1470.4x-0.9y=3.9
7y-4x=1470.8x+0.8y=3.1
3a=b+54x-y=14
7a=b+198x=3y-10
3x+5y=13m-6b=15
y+4x=1-4m+5b=5
8a=7b-118x+4y=0
4a=7b-44x-y=-2
5x+2y=1190.4x-0.9y=2.6
2y+8x=1190.8x-0.1y=1.7
3a=6b+182x+3y=10
2a=4b+176x=8y-10
7x+6y=1525m-2b=28
8y-x=152-9m+9b=19
5a=7b+182x-2y=1
3a=8b-84x+7y=1
4x+6y=-40.1x+0.4y=3
6y+3x=-40.6x+0.9y=0.9
8a=9b+13x+6y=16
5a=b+186x=y+16
8x-8y=79m-6b=22
9y+4x=7-9m+8b=19
7a=8b-208x-5y=-5
2a=3b-85x+3y=1
x-8y=760.4x+0.5y=2.1
6y+5x=760.5x-0.7y=2.5
7a=6b-115x-9y=7
3a=5b+124x=2y-1
7x-5y=224m-6b=23
6y+2x=22-4m+9b=10
4a=3b-43x+6y=4
3a=b-127x-2y=1
5x+8y=1150.8x-0.2y=2.7
5y+5x=1150.2x-0.1y=1.3
5a=2b+192x-9y=14
8a=b-198x=3y+3
2x+7y=1707m+6b=21
2y+4x=170-4m+3b=3
7a=6b-59x-7y=4
4a=2b-155x-8y=10
8x-4y=1380.2x-0.9y=1.4
3y+5x=1380.8x-0.2y=3.3
7a=b+9x-5y=15
5a=8b+66x=3y-7
4x+3y=1227m+4b=29
9y-3x=122-7m+4b=10
6a=b-169x-5y=-2
9a=5b+168x-5y=5
9x+5y=480.8x+0.9y=0.6
8y-8x=480.9x+0.4y=1.8
2a=8b+187x-9y=2
8a=6b+143x=2y-6
x+3y=1647m+6b=19
9y+8x=164-2m-9b=10
4a=9b+188x-y=3
7a=4b+186x+y=10
x-8y=170.2x-0.5y=0.2
8y+4x=170.2x+0.5y=1.8