-91=5n-3(-3n+7)

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Solution for -91=5n-3(-3n+7) equation: 



-91=5n-3(-3n+7)

We move all terms to the left:

-91-(5n-3(-3n+7))=0



We calculate terms in parentheses: -(5n-3(-3n+7)), so:

5n-3(-3n+7)

We multiply parentheses

5n+9n-21

We add all the numbers together, and all the variables

14n-21

Back to the equation:

-(14n-21)



We get rid of parentheses

-14n+21-91=0

We add all the numbers together, and all the variables

-14n-70=0

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

-14n=70

n=70/-14

n=-5

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