9+7n=8(-5+7n)

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Solution for 9+7n=8(-5+7n) equation: 



9+7n=8(-5+7n)

We move all terms to the left:

9+7n-(8(-5+7n))=0

We add all the numbers together, and all the variables

7n-(8(7n-5))+9=0



We calculate terms in parentheses: -(8(7n-5)), so:

8(7n-5)

We multiply parentheses

56n-40

Back to the equation:

-(56n-40)



We get rid of parentheses

7n-56n+40+9=0

We add all the numbers together, and all the variables

-49n+49=0

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

-49n=-49

n=-49/-49

n=1

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