-9=-3(v-4)

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



-9=-3(v-4)

We move all terms to the left:

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



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

-3(v-4)

We multiply parentheses

-3v+12

Back to the equation:

-(-3v+12)



We get rid of parentheses

3v-12-9=0

We add all the numbers together, and all the variables

3v-21=0

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

3v=21

v=21/3

v=7

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