30=3v-9

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Solution for 30=3v-9 equation: 



30=3v-9

We move all terms to the left:

30-(3v-9)=0

We get rid of parentheses

-3v+9+30=0

We add all the numbers together, and all the variables

-3v+39=0

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

-3v=-39

v=-39/-3

v=+13

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