SOLUTION: whats x + y =12 and x

SOLUTION: whats x + y =12 and x - y =-8 solve for x

Question 964685: whats x + y =12

and x - y =-8 solve for x

Found 3 solutions by Fombitz, Alan3354, stanbon:
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Add the two equations together,

Now solve for .
Then go back and use either equation to solve for .
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
x + y =12
x - y =-8
--------------- Add

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!

x + y =12
x - y =-8
---------
Add and solve for "x":
2x = 4
x = 2
=================
Cheers,
Stan H.
---------------
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