84=-4(7-4v)

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Solution for 84=-4(7-4v) equation: 



84=-4(7-4v)

We move all terms to the left:

84-(-4(7-4v))=0

We add all the numbers together, and all the variables

-(-4(-4v+7))+84=0



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

-4(-4v+7)

We multiply parentheses

16v-28

Back to the equation:

-(16v-28)



We get rid of parentheses

-16v+28+84=0

We add all the numbers together, and all the variables

-16v+112=0

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

-16v=-112

v=-112/-16

v=+7

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