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40=8(2n-3)
We move all terms to the left:
40-(8(2n-3))=0
We calculate terms in parentheses: -(8(2n-3)), so:We get rid of parentheses
8(2n-3)
We multiply parentheses
16n-24
Back to the equation:
-(16n-24)
-16n+24+40=0
We add all the numbers together, and all the variables
-16n+64=0
We move all terms containing n to the left, all other terms to the right
-16n=-64
n=-64/-16
n=+4
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