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n+2=-3(n-3)
We move all terms to the left:
n+2-(-3(n-3))=0
We calculate terms in parentheses: -(-3(n-3)), so:We get rid of parentheses
-3(n-3)
We multiply parentheses
-3n+9
Back to the equation:
-(-3n+9)
n+3n-9+2=0
We add all the numbers together, and all the variables
4n-7=0
We move all terms containing n to the left, all other terms to the right
4n=7
n=7/4
n=1+3/4
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