SOLUTION: Which method would be the easiest way to solve this system of equations? Why? What is the solution? x + 2y = -5 -x + y =-4

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Question 847942: Which method would be the easiest way to solve this system of equations? Why? What is the solution?
x + 2y = -5
-x + y =-4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Add the two equations together to eliminate x.
x%2B2y-x%2By=-5-4
3y=-9
y=-3
Then use either equation to solve for x
-x%2B%28-3%29=-4
-x=-1
x=1