12=-2(n-77)

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Solution for 12=-2(n-77) equation: 



12=-2(n-77)

We move all terms to the left:

12-(-2(n-77))=0



We calculate terms in parentheses: -(-2(n-77)), so:

-2(n-77)

We multiply parentheses

-2n+154

Back to the equation:

-(-2n+154)



We get rid of parentheses

2n-154+12=0

We add all the numbers together, and all the variables

2n-142=0

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

2n=142

n=142/2

n=71

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