3v-7=9-v

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Solution for 3v-7=9-v equation: 



3v-7=9-v

We move all terms to the left:

3v-7-(9-v)=0

We add all the numbers together, and all the variables

3v-(-1v+9)-7=0

We get rid of parentheses

3v+1v-9-7=0

We add all the numbers together, and all the variables

4v-16=0

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

4v=16

v=16/4

v=4

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