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264=-6(-7n-2)
We move all terms to the left:
264-(-6(-7n-2))=0
We calculate terms in parentheses: -(-6(-7n-2)), so:We get rid of parentheses
-6(-7n-2)
We multiply parentheses
42n+12
Back to the equation:
-(42n+12)
-42n-12+264=0
We add all the numbers together, and all the variables
-42n+252=0
We move all terms containing n to the left, all other terms to the right
-42n=-252
n=-252/-42
n=+6
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