Question

y=x+12 y=-18 answer this step by step help please

Answer 1

y = x + 12
y = -18

substitute in the value for y
-18 = x + 12
subtract 12 from both sides
-30 = x

To check:
y = x + 12
y = -18

-18 =?= (-30) + 12
-18 = -18

Hope this helps