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X+(5+X)-3=57
We move all terms to the left:
X+(5+X)-3-(57)=0
We add all the numbers together, and all the variables
X+(X+5)-3-57=0
We add all the numbers together, and all the variables
X+(X+5)-60=0
We get rid of parentheses
X+X+5-60=0
We add all the numbers together, and all the variables
2X-55=0
We move all terms containing X to the left, all other terms to the right
2X=55
X=55/2
X=27+1/2
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