21=-7v

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Solution for 21=-7v equation:


Simplifying
21 = -7v

Solving
21 = -7v

Solving for variable 'v'.

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

Add '7v' to each side of the equation.
21 + 7v = -7v + 7v

Combine like terms: -7v + 7v = 0
21 + 7v = 0

Add '-21' to each side of the equation.
21 + -21 + 7v = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 7v = 0 + -21
7v = 0 + -21

Combine like terms: 0 + -21 = -21
7v = -21

Divide each side by '7'.
v = -3

Simplifying
v = -3

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