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(56+x)/2=85
We move all terms to the left:
(56+x)/2-(85)=0
We add all the numbers together, and all the variables
(x+56)/2-85=0
We multiply all the terms by the denominator
(x+56)-85*2=0
We add all the numbers together, and all the variables
(x+56)-170=0
We get rid of parentheses
x+56-170=0
We add all the numbers together, and all the variables
x-114=0
We move all terms containing x to the left, all other terms to the right
x=114
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