SOLUTION: x+y=19 x-y=-7

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Question 712914: x+y=19
x-y=-7
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=19
x-y=-7 add.
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2x=12
x=12/2
x=6 ans.
6+y=19
y=19-6
y=13 ans.
Proof:
13-6=-7
-7=-7