1、人教版七年级数学下册二元一次方程组练习题40 2x5y=3 4x8y=8 8x9y=-13 4x4y=1 3x y=-9 3x y=4 5x4y=-7 5x8y=-8 3x5y=14 2x2y=3 5x y=1 3x2y=-5 5x y=-2 7x5y=-7 3x7y=-14 5x4y=-7 x5y=-5 2x2y=-5 5x y=-6 7x y=-8 5x9y=17 5x2y=-8 2x2y=7 2x2y=3 2x4y=-4 9x3y=-7 3x7y=23 2x y=8 4x4y=-2 3x5y=2 x y=5 7x7y=-3 x7y=-17 x3y=-6 3x2y=-4 2x3y=0 2x
2、5y=-2 3x y=-3 x4y=-24 2x5y=-7 x3y=2 4x3y=-9 2x4y=7 4x4y=-6 8x5y=-4 4x2y=-5 5x5y=7 3x5y=-8 5x y=7 8x5y=-3 6x5y=15 2x2y=-3 2x5y=5 x4y=1 3x2y=0 9x6y=-8 4x8y=-21 4x4y=2 4x4y=8 x2y=-5 2x3y=8 x6y=2 x y=-5 5x3y=-3 3x y=7 3x4y=9 5x3y=-1 9x y=5 6x4y=-1 x2y=2 5x5y=9 3x2y=-6 3x y=0 8x8y=-3 8x9y=2 2x y=-4 2x5y=
3、-4 3x4y=8 3x5y=6 4x3y=-3 9x3y=6 x2y=0 5x4y=1 x y=-7 2x2y=8 5x5y=-7 2x y=18 2x3y=-3 5x2y=0 3x2y=2 3x3y=4 2x6y=-4 3x6y=-9 2x3y=1 5x4y=-3 2x3y=1 3x5y=-7 9x3y=-4 4x3y=-22 4x2y=2 2x5y=6 x2y=-8 4x5y=8 8x2y=6 5x y=26 2x y=-5 x2y=-2 3x3y=-9 2x5y=-6 6x5y=8 7x4y=-12 3x4y=-4 x2y=-6 4x2y=7 5x y=6 5x6y=5 x9y=13
4、5x5y=-1 5x y=9 3x5y=-2 3x4y=5 8x7y=5 3x6y=-5 3x3y=3 3x5y=8 x2y=2 x y=-4 7x y=5 3x3y=-23 5x2y=2 4x4y=3 3x2y=6 5x2y=-8 5x5y=-3 6x4y=28 2x4y=4 x3y=4 3x5y=7 x y=6 7x6y=-9 4x5y=-22 2x3y=-3 x2y=-2 4x y=-1 5x4y=7 4x y=-9 4x7y=10 5x3y=8 x4y=7 x2y=-7 5x3y=-5 9x6y=6 2x7y=-11 3x y=-1 5x4y=3 4x4y=-8 5x4y=-8 6x
5、y=-7 3x y=29 x2y=-4 5x5y=3 5x3y=-3 3x5y=9 2x2y=5 9x7y=-24 5x5y=0 5x2y=-9 x y=0 5x5y=2 7x9y=8 5x2y=16 3x5y=4 3x4y=-8 4x y=9 5x2y=0 2x y=-5 4x6y=-1 5x3y=1 3x2y=-8 4x5y=0 x y=1 7x8y=-2 x7y=-11 3x4y=0 x4y=9 2x5y=6 4x2y=6 5x7y=7 2x7y=0 x4y=3 2x y=7 2x4y=-8 5x4y=2 6x4y=5 4x8y=15 x3y=6 4x y=-3 3x2y=-7 2x5y
6、=-9 9x8y=-1 x4y=-30 4x5y=3 4x y=4 5x5y=-1 4x5y=8 4x5y=-9 2x7y=17 2x y=1 5x5y=-2 2x4y=1 x3y=-7 3x5y=-2 9x y=-28 x2y=-6 5x4y=7 4x3y=5 5x4y=4 4x3y=5 7x9y=-20 5x y=1 4x y=0 5x4y=6 2x5y=6 7x4y=1 6x4y=-29 x4y=9 5x5y=5 2x y=-1 4x4y=4 5x3y=8 9x2y=17 4x2y=-8 4x3y=5 5x4y=9 4x5y=-6 3x8y=-1 7x4y=5 3x4y=-2 3x y=
7、5 x5y=-4 2x y=-1 9x3y=-9 7x3y=8 5x5y=-7 x5y=0 3x5y=2 x5y=-5 9x4y=3 5x y=2 5x3y=-1 x2y=2 3x y=2 5x y=-8 6x6y=-3 5x y=20 x3y=0 x3y=2 4x y=5 4x y=-6 2x8y=-1 2x9y=-6 x2y=5 2x2y=-6 3x4y=4 5x3y=-5 3x3y=4 3x4y=9 2x4y=7 2x4y=2 x4y=-6 5x3y=7 7x4y=2 8x2y=-4 4x5y=-8 3x3y=9 3x4y=1 x2y=4 7x5y=-1 8x y=-29 3x3y=8
8、3x4y=-1 3x2y=9 3x3y=2 4x8y=9 5x8y=-20 4x4y=-7 2x4y=8 2x3y=-7 4x4y=-4 9x2y=-1 4x4y=-2 2x2y=9 5x4y=7 x y=-2 x2y=6 3x9y=3 2x2y=-5 3x3y=0 x2y=-3 x4y=-4 5x2y=-5 x8y=3 7x4y=7 4x4y=-6 5x y=8 4x2y=-3 3x2y=3 9x y=4 9x2y=2 3x4y=3 3x4y=-6 2x y=4 4x2y=4 4x8y=0 3x8y=-10 4x4y=7 4x y=-2 3x y=9 x2y=8 4x8y=-1 x4y=5
9、2x4y=1 x3y=-2 5x4y=2 4x4y=-8 2x2y=-4 4x2y=-2 4x5y=1 x2y=4 3x2y=-5 5x y=3 8x y=8 x3y=-11 3x2y=0 x2y=7 2x2y=8 4x5y=4 9x7y=-7 8x y=13 3x3y=7 x2y=0 2x2y=5 2x y=1 9x y=7 8x y=14 5x y=-9 4x5y=6 2x y=8 4x y=5 7x8y=7 2x4y=-27 5x5y=-4 5x5y=8 2x4y=6 x3y=0 9x9y=0 7x3y=-28 5x2y=3 5x y=-7 4x2y=7 2x3y=6 7x6y=-1 6
10、x5y=5 x4y=-3 x5y=-2 4x4y=1 x3y=-4 9x3y=-5 9x3y=-2 5x5y=-5 4x5y=-9 x3y=2 5x5y=5 6x4y=-2 7x9y=1 x5y=7 x2y=5 x4y=-7 3x3y=8 9x7y=-6 9x y=30 4x2y=1 2x4y=7 x2y=8 5x5y=-6 4x y=-5 x8y=3 4x3y=0 5x2y=9 4x2y=0 4x3y=-6 3x8y=-3 7x4y=23 4x2y=3 5x2y=6 4x y=-9 2x2y=-3 3x5y=-9 7x9y=6 5x4y=-9 x y=2 x y=2 3x y=8 x6y=4
11、 4x7y=8 4x2y=-7 x y=6 5x y=6 5x y=-1 3x4y=-8 7x2y=-13 5x4y=-1 2x2y=8 4x3y=3 4x4y=-4 7x7y=-5 6x9y=15 x y=-4 3x y=-3 x5y=-9 5x y=3 3x4y=-4 3x9y=8 x4y=0 3x5y=6 2x y=3 x2y=9 7x5y=-8 4x7y=13 5x4y=2 2x3y=-3 x3y=3 3x4y=5 2x3y=-8 8x3y=21 3x3y=-2 3x3y=-1 5x3y=3 3x5y=-9 2x2y=-7 8x7y=29 5x y=4 4x y=-2 5x4y=3 2x5y=7 8x8y=0 9x6y=-25 x5y=-2 2x5y=9 x3y=7 4x5y=5 5x4y=-7 6x2y=9 2x3y=-6 4x3y=-1 2x y=1 x5y=2 9x4y=9 5x7y=-4 2x2y=-1 5x4y=-4 2x5y=7 2x3y=-5 5x y=2 2x y=-1 2x5y=2 3x y=-7 3x5y=3 2x2y=-7 7x8y=-7 9x7y=-21 4x5y=9 2x5y=2 3x y=3 3x2y=6 8x5y=3 x5y=20 x5y=3 2x y=-8 3x2y=9
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