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216=6(-5n-4)
We move all terms to the left:
216-(6(-5n-4))=0
We calculate terms in parentheses: -(6(-5n-4)), so:We get rid of parentheses
6(-5n-4)
We multiply parentheses
-30n-24
Back to the equation:
-(-30n-24)
30n+24+216=0
We add all the numbers together, and all the variables
30n+240=0
We move all terms containing n to the left, all other terms to the right
30n=-240
n=-240/30
n=-8
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