91=7(n-86)

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Solution for 91=7(n-86) equation: 



91=7(n-86)

We move all terms to the left:

91-(7(n-86))=0



We calculate terms in parentheses: -(7(n-86)), so:

7(n-86)

We multiply parentheses

7n-602

Back to the equation:

-(7n-602)



We get rid of parentheses

-7n+602+91=0

We add all the numbers together, and all the variables

-7n+693=0

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

-7n=-693

n=-693/-7

n=+99

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