7v-3v=40

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Solution for 7v-3v=40 equation: 



7v-3v=40

We move all terms to the left:

7v-3v-(40)=0

We add all the numbers together, and all the variables

4v-40=0

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

4v=40

v=40/4

v=10

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