12v+7-v=-20+20v

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Solution for 12v+7-v=-20+20v equation: 



12v+7-v=-20+20v

We move all terms to the left:

12v+7-v-(-20+20v)=0

We add all the numbers together, and all the variables

12v-v-(20v-20)+7=0

We add all the numbers together, and all the variables

11v-(20v-20)+7=0

We get rid of parentheses

11v-20v+20+7=0

We add all the numbers together, and all the variables

-9v+27=0

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

-9v=-27

v=-27/-9

v=+3

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