21v=8v-9

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Solution for 21v=8v-9 equation: 


Simplifying
21v = 8v + -9

Reorder the terms:
21v = -9 + 8v

Solving
21v = -9 + 8v

Solving for variable 'v'.

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

Add '-8v' to each side of the equation.
21v + -8v = -9 + 8v + -8v

Combine like terms: 21v + -8v = 13v
13v = -9 + 8v + -8v

Combine like terms: 8v + -8v = 0
13v = -9 + 0
13v = -9

Divide each side by '13'.
v = -0.6923076923

Simplifying
v = -0.6923076923

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