SOLUTION: -x+y=1 2x+y=-2 Solve using substitution method and elimination method

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Question 713824: -x+y=1
2x+y=-2
Solve using substitution method and elimination method
Answer by iamverybadinmath(9) About Me  (Show Source):
You can put this solution on YOUR website!
This is a pretty simple problem if you know how to substitute problems.
The answer to this problem is:
x=-1
y=0
Here's the work:
2x+y-(-x)-y=-2-1
2x+x+y-y=-3
3x=-3
x=-1
Then you substitute x into equation 1:
-(-1)+y=1
y=1-(-(-1))
y=1-1
y=0
I hope you understand my work and explanation, you can email me if you have any more questions! Enjoy! ;)