SOLUTION: Solve the following system by the substitution method. x+3y=2 -x+y=1

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Question 295137: Solve the following system by the substitution method.
x+3y=2
-x+y=1
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
x+3y=2
-x+y=1
.
y=x+1
x+3(x+1)=2 substitute x+1 for y
x+3x+3=2
4x=-1
x=-1/4
y=3/4
.
Ed