SOLUTION: Solve for X and Y: x - 4y= 27 3x + y = -23

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Question 717266: Solve for X and Y:
x - 4y= 27
3x + y = -23
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
x - 4y= 27 multiply by -3 & add.
3x + y = -23
-3x+12y=-81
-----------------
13y=-104
y=-104/13
y=-8 ans.
x-4(-8)=27
x+32=27
x=27-32
x=-5 ans.
Proof:
3*-5-8=-23
-15-8=-23
-23=-23