-7=-21-v/4

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Solution for -7=-21-v/4 equation: 



-7=-21-v/4

We move all terms to the left:

-7-(-21-v/4)=0

We add all the numbers together, and all the variables

-(-v/4-21)-7=0

We get rid of parentheses

v/4+21-7=0

We multiply all the terms by the denominator


v+21*4-7*4=0

We add all the numbers together, and all the variables

v+56=0

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

v=-56

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