1=-5v+21

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Solution for 1=-5v+21 equation: 



1=-5v+21

We move all terms to the left:

1-(-5v+21)=0

We get rid of parentheses

5v-21+1=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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