SOLUTION: What is the solution to the system of equations x+3y=12 4x-y=-17

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Question 108572: What is the solution to the system of equations
x+3y=12
4x-y=-17
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
X+3Y=12 NOW MULTIPLY THE SECOND EQUATION BY 3 & ADD THEM
12X-3Y=-51
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13X=-39
X=-39/13
X=-3 ANSWER.
-3+3Y=12
3Y=12+3
3Y=15
Y=15/3
Y=5 ANSWER.
PROOF
4*-3-5=-17
-12-5=-17
-17=-17