1、人教版七年级数学下册二元一次方程组练习题87 x5y=3 x9y=4 3x4y=23 2x3y=-4 3x5y=8 x5y=5 3x y=-5 x y=-3 6x y=-19 2x2y=-5 x3y=4 2x2y=-3 4x3y=-7 9x5y=-2 5x4y=22 2x4y=-4 2x2y=-4 x3y=4 3x2y=-1 2x3y=0 3x3y=-6 2x5y=6 4x5y=-6 3x5y=7 5x4y=-1 4x4y=9 5x7y=10 5x4y=-2 3x2y=2 4x2y=-1 3x y=8 5x y=8 6x6y=3 2x3y=-8 4x3y=-9 3x5y=3 2x3y=-1 7
2、x5y=-8 7x3y=18 2x3y=1 3x y=6 3x2y=-6 4x3y=-3 5x5y=-4 9x4y=12 x3y=0 x2y=-7 4x5y=0 2x5y=1 x5y=-1 x5y=12 3x y=9 2x5y=-7 4x4y=2 x5y=-1 6x9y=-9 x3y=28 4x y=-2 4x y=-3 5x3y=4 x5y=5 4x9y=-7 4x5y=-10 4x4y=-3 4x4y=3 4x4y=9 5x y=-5 9x5y=0 8x y=-20 3x3y=-1 5x2y=2 2x y=-3 4x3y=-9 4x y=-2 2x y=-30 x3y=-1 2x5y=-8
3、 2x2y=-2 4x5y=-7 4x7y=-6 4x5y=-5 2x4y=5 x3y=-8 5x5y=-3 x4y=8 9x2y=3 8x y=-18 3x2y=-3 5x3y=5 5x y=-4 x2y=-4 2x7y=8 6x2y=-19 3x4y=6 x3y=-8 2x2y=-8 3x y=5 7x2y=-2 3x5y=-9 x5y=7 3x2y=-9 2x4y=5 5x2y=6 8x4y=6 2x4y=-19 5x2y=-1 5x4y=-9 3x y=7 x4y=-4 5x3y=4 4x6y=-18 5x2y=-4 2x3y=-9 3x y=5 4x5y=-8 7x8y=1 9x y
4、=21 2x5y=2 2x2y=-3 3x2y=-1 2x y=-6 4x4y=-2 6x3y=19 x2y=-7 5x4y=-4 3x4y=7 5x5y=2 5x8y=4 2x y=-27 4x4y=4 x y=5 4x2y=2 2x4y=3 3x7y=-7 5x8y=-5 5x y=-6 5x4y=-2 2x y=7 4x4y=3 4x8y=-7 6x4y=-24 4x5y=6 3x y=-8 4x3y=4 3x2y=-6 6x8y=2 x9y=18 4x4y=7 3x4y=1 5x3y=4 x5y=3 3x7y=-3 3x7y=-18 3x4y=-9 x y=-7 3x4y=-4 3x2
5、y=-3 6x8y=-8 7x4y=-29 4x y=8 3x4y=0 3x4y=0 2x2y=6 5x y=-9 x9y=-13 3x5y=5 4x4y=9 4x y=3 3x5y=-2 7x7y=1 3x4y=26 5x4y=8 3x5y=-2 4x y=7 3x4y=-3 6x6y=4 5x5y=-22 2x2y=7 5x3y=2 2x y=1 5x3y=-7 8x6y=-2 2x2y=-6 3x3y=-9 5x5y=7 x y=8 5x5y=4 6x3y=2 6x y=28 3x2y=5 5x5y=-2 3x4y=0 2x3y=2 3x7y=-8 6x9y=27 4x3y=-7 3x5
6、y=6 2x4y=5 5x2y=-2 8x6y=4 8x8y=3 4x2y=8 x5y=1 3x3y=9 x2y=-4 3x5y=3 6x7y=-24 4x4y=-7 2x3y=6 3x5y=9 3x3y=2 7x7y=4 6x5y=-9 4x4y=6 2x4y=-4 4x3y=-1 5x2y=-5 9x7y=0 3x4y=-17 4x3y=9 5x3y=9 2x4y=9 2x5y=-6 6x9y=0 4x3y=-11 2x4y=6 4x5y=-2 3x5y=-3 2x5y=-1 x8y=3 8x6y=7 5x3y=6 x2y=9 2x4y=-4 x5y=-4 3x5y=4 2x3y=-19
7、3x4y=2 x2y=6 5x4y=1 x y=9 6x2y=-5 5x5y=18 3x5y=-7 2x2y=3 5x5y=5 x5y=-2 9x y=-9 5x9y=19 4x2y=0 3x2y=-2 4x y=5 4x4y=-9 x5y=-1 5x2y=10 x y=-7 3x y=8 5x5y=-2 4x4y=0 6x2y=5 3x y=-3 x y=8 5x2y=-4 3x3y=5 x y=5 9x9y=1 6x4y=-9 2x4y=-2 2x2y=8 3x2y=8 4x4y=4 7x6y=3 4x8y=-28 3x y=1 3x4y=6 5x4y=8 5x5y=-7 4x9y=9 3
8、x2y=8 x4y=1 5x5y=-7 4x3y=8 4x2y=6 8x3y=-7 x6y=23 2x2y=8 x y=4 2x2y=5 2x5y=2 2x9y=-5 x6y=29 3x5y=-1 5x5y=3 4x3y=-7 4x2y=8 4x8y=4 8x9y=-8 2x2y=-8 x4y=-4 x4y=-7 2x4y=-9 7x3y=6 6x3y=1 x2y=-3 5x4y=7 5x y=-7 3x5y=2 9x8y=8 8x8y=26 5x3y=-2 3x2y=-9 5x4y=-6 x3y=5 9x6y=-8 6x3y=20 5x5y=-8 2x2y=3 4x3y=1 x y=-6 6
9、x2y=-6 x8y=21 3x y=7 4x5y=-3 3x3y=-6 2x4y=-2 3x2y=6 4x2y=-22 3x3y=8 x y=-7 2x5y=-4 3x3y=-4 4x5y=-7 5x4y=-13 x5y=-3 4x2y=3 4x y=-5 x3y=8 8x6y=-4 x5y=25 3x5y=5 5x3y=-9 5x5y=-4 x4y=-1 3x5y=6 6x5y=11 2x4y=-4 x y=2 x5y=8 4x2y=3 4x y=-2 5x y=20 2x5y=2 5x2y=5 3x4y=4 2x y=-5 6x y=8 5x y=-1 2x2y=6 4x5y=-2 5x
10、5y=-7 5x2y=-9 8x y=-8 8x2y=-9 2x y=-5 3x4y=6 x4y=-7 5x y=5 7x6y=1 5x7y=13 x5y=6 x4y=-8 2x y=-9 5x3y=-7 8x8y=-2 8x y=-30 5x3y=5 x y=0 4x2y=0 2x4y=-8 4x2y=0 8x8y=-29 4x5y=-7 5x3y=0 4x y=0 x5y=-5 x6y=0 3x3y=14 2x3y=9 3x2y=0 5x y=6 x4y=0 2x3y=2 9x7y=-27 5x5y=7 2x5y=-1 3x5y=1 5x y=9 2x9y=-6 3x9y=-30 x5y=
11、0 4x2y=8 3x2y=-7 x y=-1 6x5y=-6 x4y=-30 2x y=8 3x5y=-2 3x5y=2 x2y=-3 9x y=7 7x5y=-19 x3y=4 4x4y=7 3x5y=-1 2x2y=7 8x7y=-6 x9y=0 4x4y=4 4x5y=-3 3x4y=7 4x3y=-4 x6y=-4 7x8y=19 4x2y=-5 3x5y=6 2x y=-3 x y=-7 3x2y=4 5x y=3 2x y=-4 2x y=-7 4x5y=-6 3x4y=-8 x y=-6 6x3y=13 2x5y=8 2x y=-4 4x4y=-2 2x3y=5 x7y=9 x7y=8 x y=-1 x y=-6 x5y=7 4x4y=8 8x5y=-5 9x5y=27 x3y=7 4x2y=6 4x2y=7 4x5y=-8 5x6y=-6 5x8y=22 2x3y=-5 5x3y=4 2x y=-2 5x5y=7 5x2y=6 5x2y=-5 3x3y=2 3x2y=-1 4x5y=-6 2x5y=8 7x5y=-1 4x8y=-19 2x4y=0 3x3y=9 2x4y=3 x2y=-7 x9y=-8 4x7y=-3 3x4y=-6 3x5y=-8 5x5y=6 3x2y=3 5x9y=2 8x7y=-26 x2y=0 x4y=-8 4x y=3
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