v-8v=21

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Solution for v-8v=21 equation: 


Simplifying
v + -8v = 21

Combine like terms: v + -8v = -7v
-7v = 21

Solving
-7v = 21

Solving for variable 'v'.

Move all terms containing v to the left, all other terms to the right.

Divide each side by '-7'.
v = -3

Simplifying
v = -3

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