v=40-7v

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Solution for v=40-7v equation: 



v=40-7v

We move all terms to the left:

v-(40-7v)=0

We add all the numbers together, and all the variables

v-(-7v+40)=0

We get rid of parentheses

v+7v-40=0

We add all the numbers together, and all the variables

8v-40=0

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

8v=40

v=40/8

v=5

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