SOLUTION: solve each system by substitution x+3y=2 -x+y=1

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Question 326455: solve each system by substitution
x+3y=2
-x+y=1
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.x%2B3y=2
2.-x%2By=1
From eq. 2,
y=1%2Bx
Substitute in eq. 1,
x%2B3%281%2Bx%29=2
x%2B3%2B3x=2
4x=-1
highlight%28x=-1%2F4%29
Then from above,
y=1%2Bx
y=1-1%2F4
highlight%28y=3%2F4%29