Question

Hey guys I need help with this question. Solve the system by substitution: x=-1 and 4x+2y=16

Answer 1

4x + 2y = 16
4(-1) + 2y = 16
-4 + 2y = 16
+4 +4
2y = 20
/2 /2
y = 10

Answer 2

4(-1) + 2y = 16
-4 + 2y = 16
2y = 20
y = 10

I think this is how u do it..