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X=11.5+-8.5X
We move all terms to the left:
X-(11.5+-8.5X)=0
We add all the numbers together, and all the variables
X-(-8.5X)=0
We get rid of parentheses
X+8.5X=0
We add all the numbers together, and all the variables
9.5X=0
X=0/9.5
X=0
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