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216=-4(2-8n)
We move all terms to the left:
216-(-4(2-8n))=0
We add all the numbers together, and all the variables
-(-4(-8n+2))+216=0
We calculate terms in parentheses: -(-4(-8n+2)), so:We get rid of parentheses
-4(-8n+2)
We multiply parentheses
32n-8
Back to the equation:
-(32n-8)
-32n+8+216=0
We add all the numbers together, and all the variables
-32n+224=0
We move all terms containing n to the left, all other terms to the right
-32n=-224
n=-224/-32
n=+7
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