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54=-3(4n-2)
We move all terms to the left:
54-(-3(4n-2))=0
We calculate terms in parentheses: -(-3(4n-2)), so:We get rid of parentheses
-3(4n-2)
We multiply parentheses
-12n+6
Back to the equation:
-(-12n+6)
12n-6+54=0
We add all the numbers together, and all the variables
12n+48=0
We move all terms containing n to the left, all other terms to the right
12n=-48
n=-48/12
n=-4
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