V-4=-21

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Solution for V-4=-21 equation: 


Simplifying
V + -4 = -21

Reorder the terms:
-4 + V = -21

Solving
-4 + V = -21

Solving for variable 'V'.

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

Add '4' to each side of the equation.
-4 + 4 + V = -21 + 4

Combine like terms: -4 + 4 = 0
0 + V = -21 + 4
V = -21 + 4

Combine like terms: -21 + 4 = -17
V = -17

Simplifying
V = -17

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