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X^+X=3X-X^
We move all terms to the left:
X^+X-(3X-X^)=0
We add all the numbers together, and all the variables
2X-(3X-X^)=0
We get rid of parentheses
2X-3X+X^=0
We add all the numbers together, and all the variables
=0
X=0/1
X=0
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