v-2v=-7

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Solution for v-2v=-7 equation: 



v-2v=-7

We move all terms to the left:

v-2v-(-7)=0

We add all the numbers together, and all the variables

-1v+7=0

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

-v=-7

v=-7/-1

v=+7

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