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168=8(1-4n)
We move all terms to the left:
168-(8(1-4n))=0
We add all the numbers together, and all the variables
-(8(-4n+1))+168=0
We calculate terms in parentheses: -(8(-4n+1)), so:We get rid of parentheses
8(-4n+1)
We multiply parentheses
-32n+8
Back to the equation:
-(-32n+8)
32n-8+168=0
We add all the numbers together, and all the variables
32n+160=0
We move all terms containing n to the left, all other terms to the right
32n=-160
n=-160/32
n=-5
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