二元一次方程组练习题280.docx

1、二元一次方程组练习题280 3x y=-3 3x y=3 x y=11 3x y=1 2x5y=-1 3x2y=1 2x2y=-9 x2y=-5 9x3y=-20 x3y=-5 4x y=0 4x2y=9 x5y=6 9x4y=0 7x7y=0 4x5y=6 2x5y=8 3x3y=2 x3y=-7 5x6y=-3 3x6y=-27 3x5y=-8 4x2y=-3 5x2y=1 2x2y=-5 3x5y=-1 9x3y=-11 5x2y=9 3x4y=-8 x4y=-4 2x4y=-7 2x8y=8 8x2y=27 x4y=0 2x3y=-7 5x3y=-7 2x y=-9 7x5y=-8 5

2、x6y=0 5x y=1 2x3y=2 2x y=5 2x3y=9 7x5y=5 5x2y=21 2x4y=-9 2x4y=1 4x2y=7 5x5y=5 6x6y=-1 3x7y=6 x4y=2 4x2y=-6 4x y=3 2x5y=-7 2x8y=-2 3x6y=-10 3x5y=-1 3x5y=-3 3x y=-4 5x5y=-6 3x3y=-1 5x5y=12 3x4y=2 5x y=-3 4x3y=9 5x5y=8 6x7y=-8 7x y=-15 5x5y=6 x y=8 x5y=0 x3y=8 8x3y=1 8x y=4 x2y=-7 5x2y=3 3x y=1 3x3y=5

3、2x6y=-5 8x y=-8 2x y=-1 x5y=-2 3x2y=-8 2x3y=-9 7x5y=8 3x6y=10 4x4y=7 2x2y=7 3x y=7 3x4y=5 9x4y=1 4x7y=-22 4x2y=1 x2y=-5 5x5y=4 2x3y=-5 4x3y=-6 3x7y=-29 4x4y=-2 2x3y=-2 5x y=-1 x4y=-6 4x3y=6 x8y=20 4x y=-4 3x3y=1 4x5y=3 5x3y=1 x4y=-2 7x6y=5 2x y=6 3x5y=-8 x3y=-7 x2y=0 5x9y=2 4x4y=2 3x3y=1 4x y=5 3x5y

4、=7 5x4y=-3 9x9y=-5 7x3y=24 x y=-6 x4y=-7 3x2y=-9 x3y=-5 5x8y=2 3x7y=-14 4x y=9 2x y=-7 4x2y=-7 2x y=5 2x7y=-3 5x3y=-11 x5y=-9 2x2y=9 2x y=-7 5x5y=-6 9x4y=6 7x y=8 5x2y=-2 3x5y=7 3x5y=0 2x3y=-9 7x y=2 9x3y=-2 4x y=0 2x5y=5 x2y=0 3x y=7 7x y=9 5x8y=-4 4x2y=4 x2y=8 2x4y=-6 x y=2 9x2y=-4 4x9y=4 5x2y=-3

5、2x y=9 4x3y=-4 2x y=-9 4x2y=-6 9x y=-14 4x3y=-9 3x4y=7 4x y=5 2x2y=9 x2y=-7 7x8y=-23 3x3y=0 2x3y=-4 2x5y=6 5x3y=1 4x3y=-7 2x4y=4 4x2y=-1 4x4y=7 4x5y=-3 4x3y=-9 2x y=0 x6y=23 2x3y=-9 4x y=-6 x2y=-5 2x2y=7 7x4y=-6 2x6y=2 5x5y=-8 2x5y=3 3x5y=8 5x5y=-6 2x y=-1 2x7y=-29 3x4y=-7 3x y=-6 2x2y=5 3x2y=2 8x7y

6、=7 7x9y=-4 2x5y=-8 2x4y=2 2x y=-9 3x y=-9 8x5y=-6 3x5y=-26 x4y=7 4x3y=3 2x y=6 x3y=1 2x4y=9 x7y=21 5x2y=-3 x y=8 x y=-2 2x4y=-1 4x3y=-4 8x2y=1 5x y=3 x3y=0 5x y=5 3x3y=-6 5x6y=5 4x3y=-25 3x5y=9 4x5y=-7 x2y=-1 3x2y=-7 7x6y=-2 6x y=26 x2y=5 3x2y=-3 5x y=-2 5x4y=-9 6x2y=-4 9x8y=19 x y=0 x5y=0 x3y=-3 x4

7、y=5 4x y=-8 5x2y=-21 3x y=6 2x y=-1 3x3y=3 5x2y=6 x9y=0 2x4y=19 x2y=5 5x3y=1 3x2y=-5 4x3y=2 7x3y=8 8x6y=-2 5x5y=-8 2x4y=-5 4x4y=-1 3x5y=5 4x9y=-4 4x8y=4 3x3y=-9 2x5y=-9 x5y=-1 2x4y=8 4x9y=9 9x y=-5 x5y=-3 x3y=1 4x y=-8 4x3y=-6 6x y=-7 x8y=15 2x5y=-7 2x y=4 x y=3 4x4y=2 8x7y=9 6x9y=29 3x5y=7 5x5y=0 3

8、x5y=-2 4x y=3 9x y=3 5x9y=-5 3x5y=-8 x3y=-4 x5y=-9 5x4y=7 2x6y=7 5x y=28 5x2y=-3 x5y=1 4x4y=6 4x y=1 x8y=4 9x7y=-11 2x3y=-7 5x2y=1 3x4y=-3 2x5y=2 2x2y=-9 9x2y=20 x4y=9 x4y=5 5x y=-7 3x y=7 3x2y=-4 4x8y=-4 4x3y=1 4x4y=3 5x y=2 3x y=0 7x y=-9 5x2y=4 4x y=6 2x y=0 4x5y=-8 4x4y=8 9x y=-7 x9y=15 2x5y=-1

9、3x4y=5 x5y=7 2x y=-8 x4y=8 9x8y=0 4x4y=1 4x2y=-2 2x4y=-6 x4y=7 4x7y=-8 8x8y=20 5x4y=8 2x y=-1 2x4y=-8 5x5y=-7 4x y=-1 7x4y=-5 5x3y=5 x4y=-2 4x2y=5 5x2y=-3 9x6y=9 3x y=28 5x3y=-2 4x5y=-5 3x5y=-7 x4y=6 7x5y=-9 6x8y=11 2x4y=9 5x5y=8 x3y=-5 x4y=-1 5x5y=5 7x7y=10 x4y=9 3x5y=-5 5x5y=8 x5y=-7 5x7y=6 x4y=27 4x y=0 5x3y=-1 3x5y=8 5x3y=-9 9x3y=-6 x y=24 4x5y=-9 3x4y=3 5x2y=0 3x4y=9 4x9y=2 6x2y=-18 3x y=9 5x y=4 3x y=1 5x5y=0 2x3y=7 3x8y=-3