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(x.x+2)/2=9
We move all terms to the left:
(x.x+2)/2-(9)=0
We multiply all the terms by the denominator
(x.x+2)-9*2=0
We add all the numbers together, and all the variables
(x.x+2)-18=0
We get rid of parentheses
x.x+2-18=0
We add all the numbers together, and all the variables
x.x-16=0
We move all terms containing x to the left, all other terms to the right
x.x=16
x=16/1
x=16
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