21-4v=-11

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Solution for 21-4v=-11 equation: 


Simplifying
21 + -4v = -11

Solving
21 + -4v = -11

Solving for variable 'v'.

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

Add '-21' to each side of the equation.
21 + -21 + -4v = -11 + -21

Combine like terms: 21 + -21 = 0
0 + -4v = -11 + -21
-4v = -11 + -21

Combine like terms: -11 + -21 = -32
-4v = -32

Divide each side by '-4'.
v = 8

Simplifying
v = 8

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