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-33-1n=-3(2n+1)
We move all terms to the left:
-33-1n-(-3(2n+1))=0
We calculate terms in parentheses: -(-3(2n+1)), so:We get rid of parentheses
-3(2n+1)
We multiply parentheses
-6n-3
Back to the equation:
-(-6n-3)
-1n+6n+3-33=0
We add all the numbers together, and all the variables
5n-30=0
We move all terms containing n to the left, all other terms to the right
5n=30
n=30/5
n=6
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