7v-21=-4(v+8)

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Solution for 7v-21=-4(v+8) equation: 



7v-21=-4(v+8)

We move all terms to the left:

7v-21-(-4(v+8))=0



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

-4(v+8)

We multiply parentheses

-4v-32

Back to the equation:

-(-4v-32)



We get rid of parentheses

7v+4v+32-21=0

We add all the numbers together, and all the variables

11v+11=0

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

11v=-11

v=-11/11

v=-1

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