n=2(n-40)

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Solution for n=2(n-40) equation: 



n=2(n-40)

We move all terms to the left:

n-(2(n-40))=0



We calculate terms in parentheses: -(2(n-40)), so:

2(n-40)

We multiply parentheses

2n-80

Back to the equation:

-(2n-80)



We get rid of parentheses

n-2n+80=0

We add all the numbers together, and all the variables

-1n+80=0

We move all terms containing n to the left, all other terms to the right

-n=-80

n=-80/-1

n=+80

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