Is it a Solution?
3x+y=4
x-3y=-4
y = .5x+2
y = -x-1
r + s = -6
r - s = -10
x = 4y
2x + 3y = 22
x-2y=5
2x-y=7
y = 3x - 2
y = -x - 2
8a + 5b = 9
2a - 5b = -4
y = x - 2
3x - y = 16
y=3x-4
y=3x+2
-x+y=6
2x+3y=13
y = -3
x = 5
2x + 3y = 6
3x + 5y = 15
y = 3x - 1
7x + 2y = 37
y=-x+3
x+y-3=0
x-2y=8
4x-y=8
y = (1/3)x - 3
2x - y = 8
-3x+4y=12
2x+y=-8
3s - 2t = 4
t = 2s - 1
y=-3x+2
y=3x
-2x-1=y
x=-y+3
y - 3x = 3
y = 3x - 2
2x+4y=-4
3x+5y=-3
-x+y=4
3x-2y=-7
x+2y=-4
y=-.5x-4