7=1v+20

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Solution for 7=1v+20 equation: 



7=1v+20

We move all terms to the left:

7-(1v+20)=0

We add all the numbers together, and all the variables

-(v+20)+7=0

We get rid of parentheses

-v-20+7=0

We add all the numbers together, and all the variables

-1v-13=0

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

-v=13

v=13/-1

v=-13

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