-21-7v=7(2-2v)

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Solution for -21-7v=7(2-2v) equation: 



-21-7v=7(2-2v)

We move all terms to the left:

-21-7v-(7(2-2v))=0

We add all the numbers together, and all the variables

-7v-(7(-2v+2))-21=0



We calculate terms in parentheses: -(7(-2v+2)), so:

7(-2v+2)

We multiply parentheses

-14v+14

Back to the equation:

-(-14v+14)



We get rid of parentheses

-7v+14v-14-21=0

We add all the numbers together, and all the variables

7v-35=0

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

7v=35

v=35/7

v=5

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