Isolate x in the first equation by adding 2y to both sides. x = -24 + 2y
Now plug in this value of x into the second equation. (-24 + 2y) - y = 4 Solve. Combine all like terms, 2y - y. -24 + y = 4 Add 24 to both sides to isolate y. y = 28
Now plug y back into the first equation to find x. x - 2(28) = -24 x - 56 = -24 Add 56 to both sides to isolate x. x = 32