-9=-4v+7(v+3)

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Solution for -9=-4v+7(v+3) equation: 



-9=-4v+7(v+3)

We move all terms to the left:

-9-(-4v+7(v+3))=0



We calculate terms in parentheses: -(-4v+7(v+3)), so:

-4v+7(v+3)

We multiply parentheses

-4v+7v+21

We add all the numbers together, and all the variables

3v+21

Back to the equation:

-(3v+21)



We get rid of parentheses

-3v-21-9=0

We add all the numbers together, and all the variables

-3v-30=0

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

-3v=30

v=30/-3

v=-10

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