-7v+3(v-3)=-21

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Solution for -7v+3(v-3)=-21 equation: 



-7v+3(v-3)=-21

We move all terms to the left:

-7v+3(v-3)-(-21)=0

We add all the numbers together, and all the variables

-7v+3(v-3)+21=0

We multiply parentheses

-7v+3v-9+21=0

We add all the numbers together, and all the variables

-4v+12=0

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

-4v=-12

v=-12/-4

v=+3

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