人教版七年级数学下册二元一次方程组练习题99.docx

1、人教版七年级数学下册二元一次方程组练习题99 4x4y=5 3x7y=-6 7x7y=19 2x4y=-7 3x3y=0 2x5y=8 5x3y=6 4x8y=-4 9x4y=-9 2x5y=-4 4x y=5 4x3y=-8 3x3y=-2 8x5y=-8 6x9y=29 5x3y=-4 2x5y=0 3x3y=4 4x y=8 8x2y=-2 4x7y=1 3x4y=2 5x2y=-9 x4y=-3 3x2y=5 5x3y=0 2x9y=25 4x4y=-2 4x3y=-7 2x y=2 5x y=-3 8x y=-2 8x9y=-26 2x y=7 4x3y=-6 2x3y=-8 x5y

2、=-7 4x y=2 2x9y=6 5x3y=-5 5x4y=-4 x2y=-4 3x3y=8 8x4y=-8 2x5y=-22 2x y=1 3x5y=-8 x y=-9 5x2y=6 2x4y=-7 7x6y=-27 x4y=-9 x2y=-8 2x4y=-8 4x3y=8 7x8y=9 x4y=0 5x5y=0 5x4y=4 2x5y=6 x y=1 6x9y=-8 x4y=11 2x5y=9 3x2y=5 4x2y=6 4x2y=1 7x7y=0 5x4y=-2 2x4y=-2 2x y=9 5x3y=7 5x4y=2 8x3y=8 8x4y=-24 2x y=-8 4x2y=-2 x

3、 y=9 4x4y=9 2x2y=1 x9y=-10 x y=9 3x5y=-5 2x3y=-2 4x y=7 5x4y=5 4x3y=-16 2x y=-3 3x2y=7 4x4y=-9 3x4y=0 3x y=7 6x7y=18 2x2y=-7 3x2y=-1 5x y=4 x5y=7 7x y=6 7x9y=30 4x y=-2 5x4y=5 5x4y=-7 2x y=3 x6y=9 2x y=-23 5x3y=7 3x5y=7 x y=-4 2x4y=4 3x7y=6 6x2y=-26 5x2y=-9 2x y=-5 3x4y=7 2x y=1 6x8y=-7 6x2y=-12 4x3

4、y=8 4x2y=5 5x2y=9 x5y=7 2x2y=9 8x8y=4 4x4y=2 3x4y=7 x4y=1 5x5y=-6 3x6y=-6 5x3y=13 5x2y=1 2x2y=3 2x y=-5 2x4y=2 7x7y=6 6x5y=-16 3x2y=0 2x y=3 5x3y=9 3x2y=9 5x7y=-6 7x9y=27 x3y=-9 5x5y=-6 x y=-1 x2y=-8 6x5y=-7 2x5y=7 x2y=6 4x4y=-2 3x3y=9 3x3y=2 9x5y=-7 5x2y=29 x y=6 x4y=9 x5y=7 x2y=7 2x3y=9 4x9y=-7 3x

5、5y=-7 2x y=9 x2y=1 x5y=0 3x9y=-5 9x5y=-5 5x3y=-2 2x y=-4 3x2y=-3 5x2y=-8 2x7y=0 6x4y=28 2x y=6 4x3y=-7 5x2y=-6 2x4y=1 6x3y=-9 2x8y=0 3x3y=2 4x y=2 4x y=-3 3x3y=7 x y=8 2x y=18 4x4y=7 5x y=0 4x5y=9 x3y=-2 7x6y=-1 4x7y=22 2x5y=8 5x4y=-3 x3y=-9 4x y=-5 x4y=7 9x6y=-9 4x2y=7 4x5y=8 x4y=2 4x2y=4 8x3y=1 5x

6、9y=14 x4y=0 x4y=-4 5x y=9 4x3y=-5 2x7y=-9 7x3y=-21 3x2y=7 x5y=6 4x2y=5 4x5y=6 2x3y=-3 3x3y=-2 5x5y=-7 4x y=-8 x y=-2 4x y=-4 7x7y=3 8x6y=-19 3x2y=6 2x2y=-1 2x2y=2 4x4y=5 7x6y=6 6x4y=-29 5x2y=6 4x5y=2 4x4y=8 2x2y=-5 x4y=5 7x5y=-10 4x2y=4 2x5y=-9 5x3y=-3 3x y=0 8x7y=-2 4x6y=-30 2x3y=6 3x y=-2 2x5y=-8

7、2x3y=-7 5x8y=0 x8y=21 4x3y=-2 5x y=1 3x y=9 5x2y=5 6x7y=0 4x5y=21 2x5y=-3 5x y=5 5x3y=-4 5x y=0 5x3y=8 3x9y=12 5x3y=-2 5x2y=7 x y=1 x4y=-9 3x3y=4 8x2y=29 5x y=7 5x y=-3 2x2y=-8 3x4y=3 8x3y=-6 6x6y=9 5x5y=7 3x4y=4 5x2y=-3 4x5y=-2 8x3y=-4 8x3y=-26 4x3y=-4 3x4y=0 4x5y=3 3x2y=-7 3x6y=-3 4x y=3 2x y=4 2x

8、2y=-5 x4y=1 3x4y=-1 9x6y=-6 7x5y=-3 4x2y=8 x3y=0 5x5y=-9 5x3y=-8 3x6y=4 7x9y=2 5x y=-2 3x3y=-6 5x4y=-1 5x5y=-1 3x2y=-4 9x y=-6 5x y=-5 x5y=-5 x2y=-1 4x4y=2 8x8y=6 6x5y=-8 3x4y=-6 2x y=-6 5x5y=-3 4x2y=9 2x6y=-1 5x4y=26 3x4y=0 3x5y=-4 2x3y=-8 x5y=9 x8y=6 8x2y=-29 2x3y=-2 3x y=9 5x y=-7 4x y=0 6x y=9 x

9、6y=-27 2x5y=5 5x4y=9 3x5y=-6 3x3y=8 x6y=0 8x2y=8 2x4y=-8 x4y=-2 x2y=-2 x5y=7 6x4y=-2 9x y=7 x y=-8 4x2y=0 5x4y=-7 4x4y=0 7x y=0 2x5y=-15 4x4y=4 3x5y=-9 2x3y=-6 2x y=-4 7x8y=4 8x8y=21 5x4y=-4 4x y=3 4x3y=5 x2y=-9 7x7y=-1 5x8y=-29 5x5y=-2 3x4y=-3 x5y=2 5x5y=5 4x6y=8 x5y=-14 x5y=-3 3x3y=-5 3x4y=-5 4x4y

10、=2 9x9y=7 7x5y=7 4x y=-7 x3y=-1 4x5y=6 5x3y=2 2x2y=-2 6x9y=-4 4x4y=7 5x4y=-8 5x3y=-5 2x y=7 3x7y=7 9x6y=-23 3x y=5 x y=9 5x y=-9 x4y=9 2x5y=-4 2x7y=24 3x y=-8 3x3y=3 5x5y=9 x y=-4 x6y=-1 8x6y=26 2x4y=3 3x2y=1 2x4y=-3 5x2y=0 8x8y=3 2x8y=7 x3y=1 4x3y=1 2x2y=5 4x2y=1 2x3y=-6 7x4y=4 2x2y=-3 4x y=7 5x2y=

11、4 3x2y=4 2x6y=7 4x2y=13 4x2y=-2 3x y=8 2x4y=2 2x2y=6 4x y=0 6x9y=24 5x3y=-4 2x y=-2 4x5y=8 2x3y=0 4x4y=-7 5x5y=24 5x2y=-2 x y=3 x y=-1 x y=8 3x y=-9 6x8y=7 5x y=6 x y=-7 5x2y=-5 5x4y=-1 8x8y=-2 8x8y=-14 2x y=5 3x5y=-9 x4y=-6 4x5y=9 8x2y=-4 7x y=28 5x3y=5 x y=-1 x y=-7 3x2y=-7 9x9y=-7 3x y=18 5x2y=1 5x5y=8 5x4y=1 3x4y=-2 6x5y=-4 5x7y=17 x5y=5 3x2y=3 x y=9 5x4y=-3 3x8y=7 5x5y=0 x5y=-6 4x y=1 x3y=-1 3x2y=-7 x9y=6 7x5y=2 2x2y=2 5x y=1 x2y=4 2x2y=-1 9x9y=-1 5x3y=-28 x5y=-8 5x y=-2 5x3y=-2 x4y=7 5x8y=0 x y=12 5x y=7 2x4y=2 4x5y=0 5x4y=-2 5x9y=-2 9x4y=-29 3x3y=2 3x4y=-7 4x5y=-4