8v-4=-9+7v

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Solution for 8v-4=-9+7v equation: 



8v-4=-9+7v

We move all terms to the left:

8v-4-(-9+7v)=0

We add all the numbers together, and all the variables

8v-(7v-9)-4=0

We get rid of parentheses

8v-7v+9-4=0

We add all the numbers together, and all the variables

v+5=0

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

v=-5

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