-13=7+4v

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Solution for -13=7+4v equation: 



-13=7+4v

We move all terms to the left:

-13-(7+4v)=0

We add all the numbers together, and all the variables

-(4v+7)-13=0

We get rid of parentheses

-4v-7-13=0

We add all the numbers together, and all the variables

-4v-20=0

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

-4v=20

v=20/-4

v=-5

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