7v-7v+5v=20

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Solution for 7v-7v+5v=20 equation: 



7v-7v+5v=20

We move all terms to the left:

7v-7v+5v-(20)=0

We add all the numbers together, and all the variables

5v-20=0

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

5v=20

v=20/5

v=4

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