人教版七年级数学下册二元一次方程组练习题70.docx

1、人教版七年级数学下册二元一次方程组练习题70 3x y=2 3x7y=-2 8x y=-7 2x3y=3 2x3y=4 4x3y=-8 x2y=-1 8x7y=-8 9x9y=-27 4x y=5 5x y=-6 5x5y=9 4x y=6 5x7y=-7 3x9y=26 3x y=-7 2x y=-2 4x4y=6 4x5y=6 3x y=4 2x8y=-5 4x5y=1 2x5y=5 3x y=-7 x y=8 4x6y=-8 6x6y=29 x4y=0 4x2y=4 x y=-6 2x4y=1 3x7y=-6 4x8y=-3 4x2y=0 4x3y=0 3x3y=7 3x4y=5 x5y

2、=-9 4x y=-11 3x4y=4 3x5y=2 4x4y=-9 3x4y=-8 2x y=-6 4x y=-27 2x y=8 2x y=1 3x2y=-6 3x5y=4 6x2y=8 9x5y=12 5x5y=0 5x4y=4 2x5y=-4 4x4y=-9 9x5y=-6 5x y=24 5x3y=-7 5x2y=-4 5x2y=-9 3x3y=-3 2x2y=-3 3x8y=-27 3x2y=-7 3x3y=6 5x5y=4 5x4y=9 8x3y=-9 5x2y=-6 5x y=-5 2x y=-2 4x2y=-6 4x2y=6 6x3y=-4 x7y=-19 x3y=-9 x

3、y=6 4x2y=-6 4x5y=-5 8x5y=5 4x4y=-18 x4y=0 x y=-2 5x y=8 x y=6 x9y=-9 5x6y=-12 3x4y=6 5x y=9 2x2y=-8 x3y=-2 4x5y=-2 3x4y=3 3x y=8 3x3y=2 2x y=9 2x3y=-2 7x7y=3 6x6y=8 4x3y=7 5x4y=5 3x y=9 5x y=-2 2x2y=-4 3x y=5 x y=8 4x4y=5 3x4y=4 x2y=-7 8x y=-1 8x3y=-29 4x y=1 4x2y=4 2x3y=9 5x y=5 3x y=2 3x7y=-27 2x2

4、y=6 x2y=3 4x5y=3 x2y=9 6x9y=-3 4x7y=5 x5y=1 4x3y=3 4x y=-8 x4y=-6 9x6y=-8 7x3y=-17 4x y=-2 5x y=3 2x2y=5 3x4y=7 3x2y=6 3x2y=17 5x4y=7 4x5y=-2 x2y=9 3x2y=-5 2x4y=2 2x7y=-11 2x2y=-3 3x y=3 x4y=7 5x2y=-7 2x9y=2 9x4y=6 2x3y=-8 5x y=-3 3x3y=-9 5x2y=3 7x7y=-7 8x9y=-28 4x4y=8 x4y=-7 4x4y=-2 3x y=4 x y=-4 2

5、x5y=20 3x y=-6 2x4y=0 x5y=-2 5x5y=-3 4x8y=5 x7y=-15 2x3y=-6 3x2y=6 5x5y=2 5x5y=-9 3x6y=-9 6x2y=14 4x5y=6 x3y=-5 x5y=-6 5x5y=1 2x2y=-4 x8y=-7 x2y=6 4x3y=-5 3x5y=-2 5x5y=-8 4x8y=-9 7x4y=-27 3x2y=7 2x y=-8 4x3y=-4 2x3y=2 9x5y=-5 5x7y=-29 5x3y=-6 3x2y=2 4x2y=-3 x3y=-1 x8y=7 8x y=-9 2x5y=-8 4x5y=1 4x5y=-

6、6 5x y=-5 2x2y=-4 8x5y=-28 4x5y=0 x y=-1 2x2y=-9 2x y=-9 7x2y=4 9x7y=13 2x5y=-8 3x y=-8 4x5y=-4 2x y=6 5x3y=2 3x7y=-17 2x3y=5 4x5y=8 x3y=1 4x4y=-9 4x8y=0 7x4y=-16 5x y=7 3x y=2 2x5y=2 2x3y=-8 2x4y=-4 8x3y=10 5x y=1 x2y=-4 3x4y=5 x5y=2 5x7y=5 2x8y=-20 2x2y=-9 4x y=-7 4x y=-4 x y=9 7x3y=8 x8y=16 5x y=

7、-7 x3y=3 3x y=-6 x y=-2 6x9y=1 x7y=29 x4y=-2 x4y=-5 5x y=5 5x2y=-6 3x5y=8 4x5y=-21 5x3y=8 2x5y=-3 x2y=1 2x y=-4 6x3y=5 2x2y=21 2x4y=-8 4x4y=0 x y=-6 4x5y=6 3x8y=-4 4x6y=30 3x4y=6 3x3y=6 3x3y=-7 3x5y=2 4x6y=7 x9y=-10 x4y=9 4x4y=9 5x y=5 2x5y=7 8x3y=9 9x6y=13 2x4y=9 2x5y=1 3x2y=6 5x4y=-9 8x6y=-8 7x5y=

8、-25 4x4y=-3 2x4y=-8 4x4y=-6 3x2y=9 6x4y=-7 8x8y=-6 3x4y=-1 4x2y=2 4x3y=0 x4y=5 x5y=-9 2x6y=17 2x2y=-2 4x y=4 x4y=7 2x4y=4 5x3y=-1 9x5y=-12 3x2y=-5 3x3y=-6 3x3y=2 x4y=0 8x8y=-7 3x5y=3 5x4y=9 2x y=9 4x2y=-1 x4y=2 8x5y=6 x6y=-19 5x5y=-9 2x y=7 x4y=2 2x2y=4 6x y=6 x y=0 x3y=-9 3x4y=1 5x4y=-7 4x4y=5 x6y=

9、-6 8x9y=12 x y=-1 2x5y=-7 2x y=-3 2x3y=-9 6x y=4 9x4y=18 2x3y=-7 5x4y=-8 4x3y=1 2x5y=9 2x y=-6 3x5y=10 4x y=1 2x2y=5 3x y=7 3x5y=-5 5x7y=6 2x6y=13 x3y=9 5x5y=-2 4x y=-3 2x3y=-3 4x6y=9 2x7y=0 5x4y=-1 2x2y=-5 3x3y=9 4x3y=6 9x4y=3 6x9y=-15 5x2y=-9 2x y=3 5x y=4 3x5y=4 9x6y=-3 6x2y=-8 5x2y=-9 5x y=3 4x

10、y=-8 3x2y=-1 x7y=4 8x8y=-21 3x5y=2 3x3y=-7 2x2y=-1 x2y=8 x6y=-6 5x8y=-30 x2y=-5 4x4y=8 x3y=-1 3x4y=-9 5x2y=4 6x8y=-21 x y=-6 5x y=5 3x y=9 2x5y=6 7x8y=4 8x y=19 x2y=-8 5x4y=-8 3x y=4 3x5y=-5 x4y=0 4x5y=27 4x y=-8 3x y=-2 2x3y=5 5x4y=3 9x9y=5 4x9y=-9 3x4y=5 5x3y=-8 5x2y=0 x5y=1 6x9y=-4 5x8y=-15 2x4y=

11、1 2x4y=7 5x3y=8 2x5y=2 2x6y=-1 5x7y=2 x5y=8 2x2y=0 x3y=8 3x4y=6 9x5y=5 4x5y=-26 3x2y=-8 5x2y=-3 x3y=7 5x2y=4 9x7y=9 2x9y=12 5x4y=-7 3x y=-7 4x y=0 3x4y=4 2x y=5 2x8y=10 x3y=-9 3x3y=-1 3x4y=-9 2x4y=4 3x2y=-5 5x9y=-11 2x4y=3 3x5y=0 2x4y=-3 3x3y=7 4x y=-7 6x4y=3 x y=3 3x y=-2 2x y=4 3x2y=-3 6x4y=4 6x5y

12、=17 3x y=6 2x3y=-2 2x5y=9 2x3y=-7 8x y=-7 3x2y=23 2x y=5 4x3y=-7 3x y=-4 4x5y=-6 4x4y=-3 2x9y=-10 5x3y=9 2x4y=-3 5x3y=-6 x2y=-3 9x4y=0 6x8y=-16 4x y=-2 x5y=7 4x5y=9 4x3y=-8 2x9y=-3 6x2y=-27 3x5y=-6 x2y=7 5x4y=0 3x5y=-5 x3y=-1 4x6y=23 4x2y=7 3x5y=4 5x4y=-7 x2y=-2 5x4y=-3 6x2y=-28 4x5y=4 5x y=9 5x y=-6