-9v-21=-3(v-1)

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Solution for -9v-21=-3(v-1) equation:


Simplifying
-9v + -21 = -3(v + -1)

Reorder the terms:
-21 + -9v = -3(v + -1)

Reorder the terms:
-21 + -9v = -3(-1 + v)
-21 + -9v = (-1 * -3 + v * -3)
-21 + -9v = (3 + -3v)

Solving
-21 + -9v = 3 + -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.
-21 + -9v + 3v = 3 + -3v + 3v

Combine like terms: -9v + 3v = -6v
-21 + -6v = 3 + -3v + 3v

Combine like terms: -3v + 3v = 0
-21 + -6v = 3 + 0
-21 + -6v = 3

Add '21' to each side of the equation.
-21 + 21 + -6v = 3 + 21

Combine like terms: -21 + 21 = 0
0 + -6v = 3 + 21
-6v = 3 + 21

Combine like terms: 3 + 21 = 24
-6v = 24

Divide each side by '-6'.
v = -4

Simplifying
v = -4

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