81=n-3(-5+5n)

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Solution for 81=n-3(-5+5n) equation: 



81=n-3(-5+5n)

We move all terms to the left:

81-(n-3(-5+5n))=0

We add all the numbers together, and all the variables

-(n-3(5n-5))+81=0



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

n-3(5n-5)

We multiply parentheses

n-15n+15

We add all the numbers together, and all the variables

-14n+15

Back to the equation:

-(-14n+15)



We get rid of parentheses

14n-15+81=0

We add all the numbers together, and all the variables

14n+66=0

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

14n=-66

n=-66/14

n=-4+5/7

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