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-13n-53=-2(2n-4)
We move all terms to the left:
-13n-53-(-2(2n-4))=0
We calculate terms in parentheses: -(-2(2n-4)), so:We get rid of parentheses
-2(2n-4)
We multiply parentheses
-4n+8
Back to the equation:
-(-4n+8)
-13n+4n-8-53=0
We add all the numbers together, and all the variables
-9n-61=0
We move all terms containing n to the left, all other terms to the right
-9n=61
n=61/-9
n=-6+7/9
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