SOLUTION: Solve following systems by addition 2x+3y=1 5x+3y=16 2x+3y=1 -5x-3y=-16 -3x=-15 x=-5 Double checking to see if these are right?

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Question 108190: Solve following systems by addition
2x+3y=1
5x+3y=16

2x+3y=1
-5x-3y=-16
-3x=-15
x=-5
Double checking to see if these are right?
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
The answer is +5, negative divided by a negative gives you a positive. Your doing everything else correct. Good Job. Just watch your signs.
:)
2x+3y=1
-5x-3y=-16
-3x=-15
x=5