3(v-1)=9v-21

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Solution for 3(v-1)=9v-21 equation: 



3(v-1)=9v-21

We move all terms to the left:

3(v-1)-(9v-21)=0

We multiply parentheses

3v-(9v-21)-3=0

We get rid of parentheses

3v-9v+21-3=0

We add all the numbers together, and all the variables

-6v+18=0

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

-6v=-18

v=-18/-6

v=+3

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