7(2v-3)=21

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Solution for 7(2v-3)=21 equation: 



7(2v-3)=21

We move all terms to the left:

7(2v-3)-(21)=0

We multiply parentheses

14v-21-21=0

We add all the numbers together, and all the variables

14v-42=0

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

14v=42

v=42/14

v=3

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