12v=42+5v

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Solution for 12v=42+5v equation: 



12v=42+5v

We move all terms to the left:

12v-(42+5v)=0

We add all the numbers together, and all the variables

12v-(5v+42)=0

We get rid of parentheses

12v-5v-42=0

We add all the numbers together, and all the variables

7v-42=0

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

7v=42

v=42/7

v=6

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