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5n-4=2(4n+1)
We move all terms to the left:
5n-4-(2(4n+1))=0
We calculate terms in parentheses: -(2(4n+1)), so:We get rid of parentheses
2(4n+1)
We multiply parentheses
8n+2
Back to the equation:
-(8n+2)
5n-8n-2-4=0
We add all the numbers together, and all the variables
-3n-6=0
We move all terms containing n to the left, all other terms to the right
-3n=6
n=6/-3
n=-2
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