-9=-v-2v

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Solution for -9=-v-2v equation:


Simplifying
-9 = -1v + -2v

Combine like terms: -1v + -2v = -3v
-9 = -3v

Solving
-9 = -3v

Solving for variable 'v'.

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

Add '3v' to each side of the equation.
-9 + 3v = -3v + 3v

Combine like terms: -3v + 3v = 0
-9 + 3v = 0

Add '9' to each side of the equation.
-9 + 9 + 3v = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 3v = 0 + 9
3v = 0 + 9

Combine like terms: 0 + 9 = 9
3v = 9

Divide each side by '3'.
v = 3

Simplifying
v = 3

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