SOLUTION: Solve by addition x - 2y = -1 -x + 5 y = 4

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Question 191018: Solve by addition
x - 2y = -1
-x + 5 y = 4
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
x - 2y = -1
-x + 5 y = 4
-----------------------
3y=3
y=3/3
y=1 ans
x-2*1=-1
x-2=-1
x=-1+2
x=1 ans.
Proof:
-1+5*1=4
-1+5=4
4=4