21-3v=18

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Solution for 21-3v=18 equation: 


Simplifying
21 + -3v = 18

Solving
21 + -3v = 18

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 + -3v = 18 + -21

Combine like terms: 21 + -21 = 0
0 + -3v = 18 + -21
-3v = 18 + -21

Combine like terms: 18 + -21 = -3
-3v = -3

Divide each side by '-3'.
v = 1

Simplifying
v = 1

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