7v+31=-7(7-4v)-5v

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Solution for 7v+31=-7(7-4v)-5v equation: 



7v+31=-7(7-4v)-5v

We move all terms to the left:

7v+31-(-7(7-4v)-5v)=0

We add all the numbers together, and all the variables

7v-(-7(-4v+7)-5v)+31=0



We calculate terms in parentheses: -(-7(-4v+7)-5v), so:

-7(-4v+7)-5v

We add all the numbers together, and all the variables

-5v-7(-4v+7)

We multiply parentheses

-5v+28v-49

We add all the numbers together, and all the variables

23v-49

Back to the equation:

-(23v-49)



We get rid of parentheses

7v-23v+49+31=0

We add all the numbers together, and all the variables

-16v+80=0

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

-16v=-80

v=-80/-16

v=+5

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