-7v+4=-9v

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Solution for -7v+4=-9v equation: 



-7v+4=-9v

We move all terms to the left:

-7v+4-(-9v)=0

We get rid of parentheses

-7v+9v+4=0

We add all the numbers together, and all the variables

2v+4=0

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

2v=-4

v=-4/2

v=-2

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