9v-21=-6(v+1)

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Solution for 9v-21=-6(v+1) equation: 



9v-21=-6(v+1)

We move all terms to the left:

9v-21-(-6(v+1))=0



We calculate terms in parentheses: -(-6(v+1)), so:

-6(v+1)

We multiply parentheses

-6v-6

Back to the equation:

-(-6v-6)



We get rid of parentheses

9v+6v+6-21=0

We add all the numbers together, and all the variables

15v-15=0

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

15v=15

v=15/15

v=1

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