-9+21=-4(v+1)

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Solution for -9+21=-4(v+1) equation:


Simplifying
-9 + 21 = -4(v + 1)

Combine like terms: -9 + 21 = 12
12 = -4(v + 1)

Reorder the terms:
12 = -4(1 + v)
12 = (1 * -4 + v * -4)
12 = (-4 + -4v)

Solving
12 = -4 + -4v

Solving for variable 'v'.

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

Add '4v' to each side of the equation.
12 + 4v = -4 + -4v + 4v

Combine like terms: -4v + 4v = 0
12 + 4v = -4 + 0
12 + 4v = -4

Add '-12' to each side of the equation.
12 + -12 + 4v = -4 + -12

Combine like terms: 12 + -12 = 0
0 + 4v = -4 + -12
4v = -4 + -12

Combine like terms: -4 + -12 = -16
4v = -16

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

Simplifying
v = -4

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