SOLUTION: Solve by addition or substitution. 3x + 5y = 2 2x + 5y = -2

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Solve by addition or substitution. 3x + 5y = 2 2x + 5y = -2      Log On


   

Question 173709: Solve by addition or substitution.
3x + 5y = 2
2x + 5y = -2
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
We will solve this by addition;
3x + 5y = 2
(-1)2x + 5y = -2
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3x +5y = 2
-2x -5y = 2
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x=4
Now that we have our x lets plug that in to find y;
3(4)+5y=2
12 +5y =2
5y = -10
y = -2
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:)