X+y=12.X-y=2

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Solution for X+y=12.X-y=2 equation:



X+X=12.X-X=2
We move all terms to the left:
X+X-(12.X-X)=0
We add all the numbers together, and all the variables
X+X-(+11X)=0
We add all the numbers together, and all the variables
2X-(+11X)=0
We get rid of parentheses
2X-11X=0
We add all the numbers together, and all the variables
-9X=0
X=0/-9
X=0

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