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