-21=v-4

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Solution for -21=v-4 equation:


Simplifying
-21 = v + -4

Reorder the terms:
-21 = -4 + v

Solving
-21 = -4 + v

Solving for variable 'v'.

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

Add '-1v' to each side of the equation.
-21 + -1v = -4 + v + -1v

Combine like terms: v + -1v = 0
-21 + -1v = -4 + 0
-21 + -1v = -4

Add '21' to each side of the equation.
-21 + 21 + -1v = -4 + 21

Combine like terms: -21 + 21 = 0
0 + -1v = -4 + 21
-1v = -4 + 21

Combine like terms: -4 + 21 = 17
-1v = 17

Divide each side by '-1'.
v = -17

Simplifying
v = -17

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