7v-12=20-v

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Solution for 7v-12=20-v equation: 



7v-12=20-v

We move all terms to the left:

7v-12-(20-v)=0

We add all the numbers together, and all the variables

7v-(-1v+20)-12=0

We get rid of parentheses

7v+1v-20-12=0

We add all the numbers together, and all the variables

8v-32=0

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

8v=32

v=32/8

v=4

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