SOLUTION: get the value of x and y x+3y=9 2x-y=4

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Question 200838: get the value of x and y
x+3y=9
2x-y=4
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x+3y=9
2x-y=4 multiply by 3 & add.
6x-3y=12
x+3y=9
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7x=21
x=21/7
x=3 ans.
3+3y=9
3y=9-3
3y=6
y=6/3
y=2 ans.
Proof:
2*3-2=4
6-2=4
4=4