15-5v-4v=-5v-7v

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Solution for 15-5v-4v=-5v-7v equation: 



15-5v-4v=-5v-7v

We move all terms to the left:

15-5v-4v-(-5v-7v)=0

We add all the numbers together, and all the variables

-5v-4v-(-12v)+15=0

We add all the numbers together, and all the variables

-9v-(-12v)+15=0

We get rid of parentheses

-9v+12v+15=0

We add all the numbers together, and all the variables

3v+15=0

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

3v=-15

v=-15/3

v=-5

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