-3v-9v=12

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Solution for -3v-9v=12 equation: 



-3v-9v=12

We move all terms to the left:

-3v-9v-(12)=0

We add all the numbers together, and all the variables

-12v-12=0

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

-12v=12

v=12/-12

v=-1

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