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-15=-6n+(-3)
We move all terms to the left:
-15-(-6n+(-3))=0
We calculate terms in parentheses: -(-6n+(-3)), so:We get rid of parentheses
-6n+(-3)
We add all the numbers together, and all the variables
-6n-3
Back to the equation:
-(-6n-3)
6n+3-15=0
We add all the numbers together, and all the variables
6n-12=0
We move all terms containing n to the left, all other terms to the right
6n=12
n=12/6
n=2
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