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70=2(n-43)
We move all terms to the left:
70-(2(n-43))=0
We calculate terms in parentheses: -(2(n-43)), so:We get rid of parentheses
2(n-43)
We multiply parentheses
2n-86
Back to the equation:
-(2n-86)
-2n+86+70=0
We add all the numbers together, and all the variables
-2n+156=0
We move all terms containing n to the left, all other terms to the right
-2n=-156
n=-156/-2
n=+78
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