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-15-5n=-2(n-3)
We move all terms to the left:
-15-5n-(-2(n-3))=0
We calculate terms in parentheses: -(-2(n-3)), so:We get rid of parentheses
-2(n-3)
We multiply parentheses
-2n+6
Back to the equation:
-(-2n+6)
-5n+2n-6-15=0
We add all the numbers together, and all the variables
-3n-21=0
We move all terms containing n to the left, all other terms to the right
-3n=21
n=21/-3
n=-7
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