SOLUTION: what is x - y = -2 and -4x + 4y = 8

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: what is x - y = -2 and -4x + 4y = 8      Log On


   

Question 1199697: what is x - y = -2 and -4x + 4y = 8
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Look carefully at the second equation.

-4x%2B4y=8
-4%28x%2By%29=%28-4%29%28-2%29
%28-1%2F4%29%28-4%28x%2By%29%29=%28-1%2F4%29%28-4%29%28-2%29
and what do you think comes next?