8=20-4v

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Solution for 8=20-4v equation: 



8=20-4v

We move all terms to the left:

8-(20-4v)=0

We add all the numbers together, and all the variables

-(-4v+20)+8=0

We get rid of parentheses

4v-20+8=0

We add all the numbers together, and all the variables

4v-12=0

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

4v=12

v=12/4

v=3

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