y=-5
x=0 .
2x-2y=10
2x+y=5
2 answers
subtract the two equations
-3y = 5
y = -5/3
sub back into first equation
2x -2(-5/3) = 10
2x = 10 - 10/3
2x = 20/3
x = 10/3
-3y = 5
y = -5/3
sub back into first equation
2x -2(-5/3) = 10
2x = 10 - 10/3
2x = 20/3
x = 10/3