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12-2n=4(2n+3)
We move all terms to the left:
12-2n-(4(2n+3))=0
We calculate terms in parentheses: -(4(2n+3)), so:We get rid of parentheses
4(2n+3)
We multiply parentheses
8n+12
Back to the equation:
-(8n+12)
-2n-8n-12+12=0
We add all the numbers together, and all the variables
-10n=0
n=0/-10
n=0
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