30=-10(v-2)

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Solution for 30=-10(v-2) equation: 



30=-10(v-2)

We move all terms to the left:

30-(-10(v-2))=0



We calculate terms in parentheses: -(-10(v-2)), so:

-10(v-2)

We multiply parentheses

-10v+20

Back to the equation:

-(-10v+20)



We get rid of parentheses

10v-20+30=0

We add all the numbers together, and all the variables

10v+10=0

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

10v=-10

v=-10/10

v=-1

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