1、人教版七年级数学下册二元一次方程组练习题49 4x3y=6 x7y=7 7x7y=26 5x2y=-2 x5y=0 x3y=-3 3x4y=-5 7x6y=9 x9y=19 3x4y=7 2x3y=-6 3x5y=7 3x5y=0 8x8y=-4 6x2y=3 4x5y=-9 x3y=8 5x3y=0 3x4y=-1 4x3y=1 9x2y=6 4x4y=0 5x3y=-6 5x4y=7 4x5y=-7 8x5y=2 2x3y=3 3x2y=-6 4x4y=8 5x4y=-8 x2y=-7 7x3y=-5 3x8y=-2 x5y=9 2x4y=6 x5y=9 3x3y=-7 x7y=-1 8x
2、3y=-25 3x4y=8 3x2y=4 4x3y=-1 4x y=-2 9x8y=2 3x3y=19 2x5y=-1 3x4y=7 2x3y=-9 5x4y=-9 9x7y=-7 4x8y=-10 2x4y=6 3x4y=6 4x5y=-8 5x3y=-7 8x4y=-2 3x5y=-10 5x5y=0 x y=7 x4y=-9 4x y=2 3x9y=3 4x6y=-21 4x5y=-4 5x3y=-8 4x4y=0 2x y=5 5x9y=-5 7x6y=4 4x3y=-2 x y=1 x4y=5 2x2y=7 x2y=-1 6x9y=23 2x y=6 3x5y=6 5x4y=-4 x
3、4y=9 3x2y=6 x y=-30 5x2y=-8 4x y=4 x2y=-3 4x3y=8 8x3y=8 7x5y=-5 2x2y=-7 2x2y=9 5x4y=1 2x y=1 4x2y=2 x9y=7 4x2y=9 5x y=-6 x3y=-9 4x y=-2 x3y=9 4x8y=6 2x3y=-7 2x y=5 2x y=-6 4x y=3 5x3y=-8 2x2y=28 x3y=0 3x2y=7 2x y=9 4x4y=9 3x5y=-5 8x6y=-22 5x4y=1 3x2y=9 4x y=-1 4x4y=-3 7x9y=1 4x6y=-9 5x5y=9 5x4y=-7 4
4、x2y=2 2x y=7 4x5y=-9 x6y=-16 x5y=-9 2x y=-2 4x y=-9 3x2y=-9 9x8y=6 4x4y=1 5x2y=-5 2x4y=-5 5x4y=0 5x3y=9 5x4y=-5 5x y=-26 4x5y=-8 4x y=7 x y=-1 2x3y=2 x5y=-2 2x7y=-2 x5y=-6 4x3y=6 3x3y=-7 5x4y=-3 6x8y=-3 7x6y=-29 5x5y=-5 5x y=-7 5x y=-9 3x5y=-2 6x3y=-3 4x3y=14 4x5y=6 x5y=1 4x5y=1 3x2y=6 2x7y=4 3x9y=2
5、2 4x y=7 3x4y=-5 4x4y=0 5x y=4 9x7y=-5 8x3y=15 2x5y=6 4x2y=-7 2x3y=2 2x4y=5 9x5y=5 7x7y=-25 5x y=2 4x y=-7 2x y=-5 5x2y=5 7x7y=7 8x7y=-28 4x2y=9 5x2y=-8 5x y=9 x3y=-9 6x2y=8 2x9y=19 3x2y=2 5x5y=6 5x5y=-8 3x4y=-1 2x y=8 4x6y=17 4x2y=-5 5x2y=-6 3x4y=1 x3y=4 4x4y=-6 3x8y=-12 3x4y=3 3x5y=3 4x3y=1 x4y=-8
6、 5x3y=-5 2x9y=-20 3x5y=-6 2x5y=2 5x5y=-4 3x3y=-2 6x2y=9 8x y=-14 x4y=-1 5x5y=3 2x2y=2 x y=4 9x2y=7 9x8y=-14 5x4y=5 3x4y=5 4x4y=8 5x4y=3 2x2y=-2 x3y=-7 3x5y=-6 2x2y=4 x2y=5 x y=-4 4x7y=-3 5x y=14 x y=-8 4x4y=1 4x3y=6 2x2y=7 9x3y=6 3x4y=-13 4x5y=-2 2x5y=0 3x2y=-6 2x5y=7 7x6y=-6 6x8y=-11 x2y=3 x4y=1 3x
7、5y=0 5x5y=6 9x7y=4 8x9y=14 2x4y=-7 4x y=-8 4x y=8 5x y=7 7x7y=-1 4x7y=-4 2x3y=-2 3x3y=5 2x2y=6 x4y=-5 6x3y=-8 6x2y=0 3x5y=2 3x4y=-2 2x y=7 x2y=-5 2x9y=-8 3x7y=16 x4y=-4 3x5y=-2 5x3y=-8 x y=0 2x6y=5 7x6y=-22 3x4y=-7 4x5y=-8 3x y=-1 4x y=-4 6x7y=5 9x3y=21 5x4y=4 3x y=-4 4x4y=-8 x y=-7 x2y=3 8x3y=23 3x
8、5y=0 5x4y=3 3x2y=0 3x y=0 5x4y=2 3x8y=20 5x y=8 2x5y=-1 x4y=9 4x y=4 2x7y=7 6x4y=18 4x y=-6 x2y=-8 x y=-7 x5y=1 2x6y=-2 9x y=-4 x4y=-8 4x3y=-2 x y=-4 3x5y=-1 6x3y=-1 3x y=-18 x5y=5 4x3y=-1 3x2y=9 5x y=0 8x5y=-5 5x3y=-9 5x2y=-7 x3y=-7 5x3y=2 2x2y=4 4x8y=-7 2x4y=15 3x5y=-5 5x y=-1 x2y=-6 3x3y=8 7x3y=5
9、 2x y=20 2x5y=-7 x5y=4 2x2y=5 5x2y=9 3x9y=2 8x8y=3 2x y=4 x2y=1 5x3y=-3 3x3y=3 9x6y=-6 x4y=-22 x5y=-4 2x2y=0 x3y=4 4x2y=1 8x9y=-6 x9y=17 5x4y=6 4x3y=3 x y=-9 x3y=-3 3x7y=2 3x4y=-3 4x5y=-6 4x3y=-2 3x2y=1 2x2y=-3 5x y=8 5x2y=-3 3x y=8 2x4y=-7 2x3y=-4 x5y=2 3x2y=8 3x9y=-18 x5y=9 4x5y=2 3x y=-6 x2y=-1 3
10、x2y=-9 9x5y=6 3x2y=-5 x3y=1 4x4y=1 3x4y=3 5x7y=8 4x9y=-3 5x5y=-5 4x5y=-3 4x4y=-3 4x y=-4 9x y=-5 6x y=-10 5x y=-5 2x y=-9 2x4y=4 x3y=-6 9x4y=-1 3x3y=-24 3x3y=9 2x4y=4 3x3y=-3 5x4y=-1 6x y=-4 7x8y=27 3x5y=-3 2x2y=7 3x5y=-4 5x3y=-9 6x3y=7 4x9y=24 5x2y=5 4x4y=2 5x3y=3 x5y=-8 3x3y=-3 9x9y=24 3x5y=-8 3x4
11、y=2 4x5y=-7 x5y=1 x6y=-5 3x9y=-13 x4y=6 2x2y=-8 3x4y=-4 5x y=8 9x2y=2 2x9y=-14 3x3y=5 4x4y=-4 3x3y=4 4x3y=8 6x4y=-6 9x6y=-15 x2y=-1 3x2y=-2 3x5y=-8 2x2y=-3 5x y=8 3x9y=-30 5x2y=-3 3x3y=7 x4y=1 2x y=7 3x6y=7 2x4y=-18 2x5y=4 5x2y=-4 5x4y=4 x2y=9 6x9y=-4 3x2y=27 5x5y=-2 5x5y=-7 2x y=2 2x3y=-5 2x y=-4 9x6y=28 4x y=-5 x2y=-2 x y=2 4x4y=3 x9y=8 2x4y=-30 2x4y=0 3x4y=4 2x5y=-6 5x4y=8 7x4y=-2 8x9y=-29 5x3y=-4 2x4y=6 x3y=3 4x5y=7 x2y=1 8x4y=-24 2x4y=7 5x2y=7 x3y=-3 5x2y=-5 5x5y=6 6x y=21 3x y=9 x4y=2 5x4y=-5 5x3y=-3 5x7y=3 4x6y=17 x3y=-4 5x4y=9 2x y=8 3x3y=0 7x4y=-9 2x5y=-30 5x y=-2 x y=1 3x3y=-8