V+9=7v-9

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Solution for V+9=7v-9 equation: 



+9=7V-9

We move all terms to the left:

+9-(7V-9)=0

We get rid of parentheses

-7V+9+9=0

We add all the numbers together, and all the variables

-7V+18=0

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

-7V=-18

V=-18/-7

V=2+4/7

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