1、人教版七年级数学下册二元一次方程组练习题285 5x2y=-6 2x3y=-2 x4y=7 2x2y=9 x y=7 3x2y=-9 x5y=5 9x2y=0 2x y=20 3x y=-5 4x2y=1 x3y=5 4x3y=-8 6x5y=0 6x4y=-5 4x y=9 3x y=-7 2x3y=3 2x y=-6 4x5y=3 6x6y=2 2x3y=-6 2x5y=6 4x3y=-5 5x5y=-7 5x7y=4 2x6y=15 3x2y=-2 5x2y=-3 3x2y=-9 4x4y=7 7x8y=6 4x5y=-8 x3y=1 4x3y=0 x4y=-7 3x4y=-7 4x8y
2、=-5 2x8y=21 4x4y=-3 2x3y=9 x2y=1 4x3y=0 5x4y=9 6x7y=-8 3x3y=1 5x y=7 5x3y=7 2x3y=-5 7x8y=7 8x8y=-8 5x4y=1 5x4y=-6 2x2y=-3 2x5y=2 6x4y=-4 6x9y=18 4x4y=-4 2x y=-5 x5y=-7 2x2y=1 x9y=6 2x4y=-27 4x4y=-3 5x5y=-1 5x y=3 3x3y=-3 5x y=8 7x8y=-11 2x3y=1 3x5y=5 5x5y=-9 4x2y=-8 8x4y=2 2x3y=-16 3x y=1 2x5y=6 2x5
3、y=-9 5x5y=2 6x5y=6 8x5y=-15 2x y=-3 x4y=9 2x2y=5 5x5y=-3 9x3y=-3 6x5y=-24 4x5y=9 2x3y=-4 x y=0 x3y=8 9x2y=5 4x y=0 4x4y=-6 x3y=2 x2y=-5 2x2y=-9 2x5y=8 x9y=-3 2x2y=6 4x2y=1 5x2y=3 x2y=8 4x9y=7 7x7y=1 5x4y=-6 2x5y=0 3x4y=7 x5y=-5 x7y=-8 4x2y=-25 4x5y=2 2x y=1 x2y=2 x5y=4 3x8y=1 2x5y=8 x3y=0 2x3y=-5 3x
4、 y=7 4x4y=4 2x y=4 3x3y=11 5x5y=-6 3x4y=-4 4x2y=7 5x3y=-6 3x3y=-7 7x8y=-13 2x2y=1 3x2y=6 2x y=2 5x3y=5 x7y=3 2x y=-28 3x4y=-6 2x2y=-3 x y=7 3x y=-7 2x y=-1 5x7y=-7 3x2y=-7 4x4y=2 5x y=-1 4x5y=4 4x5y=-8 5x4y=-21 2x y=3 x3y=-5 x y=-8 4x4y=7 9x2y=6 9x6y=19 3x3y=3 3x5y=-6 x y=2 3x3y=2 6x5y=9 3x3y=1 5x4y
5、=5 3x5y=-3 2x3y=8 3x2y=9 7x5y=3 4x7y=-8 2x2y=-6 2x5y=-5 x4y=-6 3x y=2 3x2y=8 x9y=-19 2x5y=-2 x y=-1 4x3y=-1 3x2y=-6 8x9y=0 9x2y=1 2x2y=8 x y=-2 x2y=-3 4x3y=7 x4y=-6 5x y=12 5x2y=2 5x4y=0 x2y=0 3x4y=-3 3x9y=5 2x3y=14 4x2y=0 3x5y=0 5x3y=1 2x4y=4 x7y=9 4x7y=-8 x4y=8 x3y=3 3x y=0 4x2y=-1 x3y=8 2x3y=30 5
6、x2y=3 3x5y=-1 4x5y=-6 4x5y=4 3x8y=-6 x4y=12 2x4y=2 x2y=-9 3x y=-9 4x4y=2 7x6y=6 8x2y=23 3x4y=0 2x5y=-2 3x4y=2 5x3y=2 5x5y=-2 4x7y=13 3x4y=-5 4x2y=-5 5x4y=5 x2y=8 8x7y=8 9x6y=3 x5y=-8 4x2y=-5 4x3y=-4 2x2y=-9 4x4y=-3 4x7y=28 x5y=9 4x4y=9 5x3y=3 x4y=2 9x6y=-8 6x2y=-21 3x3y=8 x5y=-7 2x2y=-1 4x y=-8 9x7y
7、=0 5x2y=-14 2x2y=-8 x4y=-8 5x5y=-3 5x3y=-4 6x4y=2 5x3y=5 5x y=-2 3x5y=0 5x2y=1 5x2y=-9 3x y=9 3x2y=-12 2x2y=-5 2x3y=4 x5y=-5 5x4y=0 6x9y=-4 6x2y=1 3x y=-7 2x y=2 3x4y=2 2x2y=-3 9x5y=7 4x y=-9 4x2y=-5 x3y=5 3x5y=5 3x3y=-5 9x7y=-3 5x6y=11 x y=7 2x y=1 4x5y=9 x y=9 9x y=-1 6x8y=29 4x2y=-1 x5y=5 5x5y=-8
8、 4x4y=-3 7x y=-7 8x9y=29 5x2y=-4 x2y=-3 2x5y=9 5x3y=6 3x6y=-3 4x6y=-6 2x2y=4 2x2y=-3 3x3y=-4 2x4y=-9 8x3y=-8 9x2y=-28 x y=2 5x3y=-8 2x4y=-4 5x4y=-6 3x6y=-5 6x y=10 5x y=9 4x4y=8 x3y=-7 3x4y=9 7x8y=2 4x5y=-26 3x5y=-6 x3y=7 3x y=2 2x4y=3 3x9y=3 9x3y=-24 3x y=-2 x2y=-7 2x4y=6 2x2y=-5 3x2y=9 9x3y=-23 x3
9、y=-1 4x4y=-3 4x y=1 3x4y=7 x y=1 3x4y=14 4x4y=3 2x y=-3 5x y=-7 5x y=-7 9x y=-9 x8y=-28 x3y=2 5x5y=7 x4y=-7 x4y=4 x3y=-7 9x4y=-23 5x5y=-2 x5y=0 5x3y=-2 2x5y=8 9x y=0 7x4y=-2 2x y=-7 2x y=8 2x2y=3 2x4y=-6 4x5y=3 3x9y=-15 4x2y=6 2x5y=-5 4x5y=6 4x4y=0 8x9y=8 5x7y=6 2x4y=-7 3x y=-8 3x4y=-2 5x2y=3 5x7y=-
10、9 6x3y=15 5x2y=5 x y=-4 3x5y=-2 2x3y=4 6x3y=6 7x3y=9 5x y=-6 x y=-6 3x2y=-3 3x2y=7 8x5y=-2 5x9y=-12 3x2y=4 2x2y=7 x4y=5 5x y=-8 3x2y=-8 4x3y=-15 3x y=-1 2x5y=4 4x2y=3 x3y=9 5x6y=-7 x5y=-7 3x3y=0 5x2y=-5 4x5y=7 3x2y=-5 5x3y=-3 8x7y=-18 4x y=-9 3x2y=2 2x5y=4 2x y=-9 9x3y=-3 7x4y=-12 2x2y=-6 4x4y=-4 x
11、y=2 2x5y=-1 8x y=-8 3x7y=-13 2x3y=-4 5x y=0 2x2y=7 x2y=8 x4y=1 4x6y=2 4x5y=-1 2x4y=5 x y=5 5x4y=-3 9x2y=7 3x3y=-21 x5y=1 3x5y=1 4x2y=-4 3x5y=2 2x6y=-4 8x7y=17 4x5y=-4 4x2y=-2 5x5y=7 x y=1 8x8y=3 9x3y=14 5x4y=2 2x y=3 2x y=0 x2y=-7 5x8y=3 8x2y=-6 5x5y=-1 5x5y=-7 x y=2 3x3y=-2 8x y=-8 x4y=16 4x4y=0 4x4y=3 4x y=-5 3x2y=-8 7x4y=0 7x y=22 3x4y=-7 3x2y=-6 2x5y=-4 3x3y=0 5x7y=-4 5x8y=11 2x2y=1 x y=5 x3y=9 3x3y=3 5x3y=-3 8x5y=-13 x2y=-4 3x y=4 2x4y=-8 x y=-4 4x9y=-4 4x2y=-30 2x5y=4 3x5y=1 4x4y=4 4x4y=5 8x5y=8 9x2y=2 3x y=-3 4x5y=5 4x3y=0 2x5y=-5 4x7y=-7 8x6y=-5 x3y=-1 4x y=3 x3y=-4
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