8=-4(v+40)

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Solution for 8=-4(v+40) equation: 



8=-4(v+40)

We move all terms to the left:

8-(-4(v+40))=0



We calculate terms in parentheses: -(-4(v+40)), so:

-4(v+40)

We multiply parentheses

-4v-160

Back to the equation:

-(-4v-160)



We get rid of parentheses

4v+160+8=0

We add all the numbers together, and all the variables

4v+168=0

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

4v=-168

v=-168/4

v=-42

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