3x+4y=20 x-12y=-20
2x+y=-2 6x-5y=18
2x-3y=-8 3x+2y=1
4x-3y=18 7x+15y=-9
y=5x-8 3x-y=-6
6x+5y=-8 4x+3y=-6
7x+8y=-5 -x+9y=21
8x-y=49 3x+2y=-3
3x+2y=2 -2x+y=8
8x-3y=5 5x-2y=4
4x+5y=48 -3x+y=2
2x-7y=-2 3x-5y=-14
4x+5y=-48 y=4x
x-3y=-4 2x-y=7
5x+y=-17 2x+5y=7
(-2, -7)
(4,2)
(-4,3)
(-2,4)
(3,-2)
(5,-9)
(1/2,-3)
(-3,2)
(2,8)
(-1,2)
(-3,2)
(-8,-2)
(5,3)
(7,27)
(2,8)
