SOLUTION: solve the system by substitution. {-x+y=-1 {3x-2y=1

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Question 551754: solve the system by substitution.
{-x+y=-1
{3x-2y=1
Answer by deborabr(181) About Me  (Show Source):
You can put this solution on YOUR website!
{-x+y=-1
{3x-2y=1
.
{-x+y=-1
-x=-1-y
x=1+y
.
{3x-2y=1
3(1+y)-2y=1
3+3y-2y=1
3+y=1
y=1-3
y=-2
.
{-x+y=-1
-x+(-2)=-1
-x-2=-1
-x=-1+2
-x=1 *(-1)
x=-1
.
y=-2 and x=-1