3=7-v

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Solution for 3=7-v equation: 



3=7-v

We move all terms to the left:

3-(7-v)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

1v-7+3=0

We add all the numbers together, and all the variables

v-4=0

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

v=4

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