SOLUTION: What's the answer for : 3x + y = 1 x - 2y = 5

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Question 257174: What's the answer for :
3x + y = 1
x - 2y = 5
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

1.3x+%2B+y+=+1
2.x-2y+=+5
Multiply eq.l 1 by 2 and add to eq. 2,
6x%2B2y%2Bx-2y=2%2B5
7x=7
x=1
Now use either eq. 1 or eq. 2 to solve for y,
3x%2By=1
3%2By=1
y=-2