-9=7+v

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Solution for -9=7+v equation: 



-9=7+v

We move all terms to the left:

-9-(7+v)=0

We add all the numbers together, and all the variables

-(v+7)-9=0

We get rid of parentheses

-v-7-9=0

We add all the numbers together, and all the variables

-1v-16=0

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

-v=16

v=16/-1

v=-16

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