[v-9]=12

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Solution for [v-9]=12 equation: 


Simplifying
[v + -9] = 12

Reorder the terms:
[-9 + v] = 12

Remove brackets around [-9 + v]
-9 + v = 12

Solving
-9 + v = 12

Solving for variable 'v'.

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

Add '9' to each side of the equation.
-9 + 9 + v = 12 + 9

Combine like terms: -9 + 9 = 0
0 + v = 12 + 9
v = 12 + 9

Combine like terms: 12 + 9 = 21
v = 21

Simplifying
v = 21

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