-256=8n-7(-7n+4)

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Solution for -256=8n-7(-7n+4) equation: 



-256=8n-7(-7n+4)

We move all terms to the left:

-256-(8n-7(-7n+4))=0



We calculate terms in parentheses: -(8n-7(-7n+4)), so:

8n-7(-7n+4)

We multiply parentheses

8n+49n-28

We add all the numbers together, and all the variables

57n-28

Back to the equation:

-(57n-28)



We get rid of parentheses

-57n+28-256=0

We add all the numbers together, and all the variables

-57n-228=0

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

-57n=228

n=228/-57

n=-4

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