-84=-4(4n+7)+8n

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Solution for -84=-4(4n+7)+8n equation: 



-84=-4(4n+7)+8n

We move all terms to the left:

-84-(-4(4n+7)+8n)=0



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

-4(4n+7)+8n

We add all the numbers together, and all the variables

8n-4(4n+7)

We multiply parentheses

8n-16n-28

We add all the numbers together, and all the variables

-8n-28

Back to the equation:

-(-8n-28)



We get rid of parentheses

8n+28-84=0

We add all the numbers together, and all the variables

8n-56=0

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

8n=56

n=56/8

n=7

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