4v=v-21

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Solution for 4v=v-21 equation:


4v=v-21

We simplify the equation to the form, which is simple to understand 
4v=v-21

We move all terms containing v to the left and all other terms to the right. 
+4v-1v=-21

We simplify left and right side of the equation. 
+3v=-21

We divide both sides of the equation by 3 to get v. 
v=-7

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