20=4-7v-5

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Solution for 20=4-7v-5 equation: 



20=4-7v-5

We move all terms to the left:

20-(4-7v-5)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

7v+1+20=0

We add all the numbers together, and all the variables

7v+21=0

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

7v=-21

v=-21/7

v=-3

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