SOLUTION: Solve for X and Y in the following problems using either substitution or elimination methods. X + Y = 10, 3X + Y = 12

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Question 271363: Solve for X and Y in the following problems using either substitution or elimination methods. X + Y = 10, 3X + Y = 12
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
3X+Y=12
-(X+Y=10)
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2X=2
X=2/2
X=1 ANS.
3*1+Y=12
3+Y=12
Y=12-3
Y=9 ANS.
PROOF:
1+9=10
10=10