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X+109=X*89
We move all terms to the left:
X+109-(X*89)=0
We add all the numbers together, and all the variables
X-(+X*89)+109=0
We get rid of parentheses
X-X*89+109=0
Wy multiply elements
X-89X+109=0
We add all the numbers together, and all the variables
-88X+109=0
We move all terms containing X to the left, all other terms to the right
-88X=-109
X=-109/-88
X=1+21/88
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