9+7v=2v-1

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Solution for 9+7v=2v-1 equation: 



9+7v=2v-1

We move all terms to the left:

9+7v-(2v-1)=0

We get rid of parentheses

7v-2v+1+9=0

We add all the numbers together, and all the variables

5v+10=0

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

5v=-10

v=-10/5

v=-2

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