SOLUTION: x+2y=-1 4x-4y=20

Question 1189990: x+2y=-1
4x-4y=20

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
x+2y=-1
4x-4y=20
---------------------------
And? If you want to solve for x & y, you should say, "Solve for x & y"
=================
x+2y=-1
4x-4y=20 ---> x - y = 5
--------
x + 2y=-1
x - y = 5
--------------------------- Subtract
3y = -6
y = -2
===============
x - y = 5
x + 2 = 5
x = 3

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