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X+65=3X-89
We move all terms to the left:
X+65-(3X-89)=0
We get rid of parentheses
X-3X+89+65=0
We add all the numbers together, and all the variables
-2X+154=0
We move all terms containing X to the left, all other terms to the right
-2X=-154
X=-154/-2
X=+77
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