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-280=8(1+6n)
We move all terms to the left:
-280-(8(1+6n))=0
We add all the numbers together, and all the variables
-(8(6n+1))-280=0
We calculate terms in parentheses: -(8(6n+1)), so:We get rid of parentheses
8(6n+1)
We multiply parentheses
48n+8
Back to the equation:
-(48n+8)
-48n-8-280=0
We add all the numbers together, and all the variables
-48n-288=0
We move all terms containing n to the left, all other terms to the right
-48n=288
n=288/-48
n=-6
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