-3m-3=21

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Solution for -3m-3=21 equation: 


Simplifying
-3m + -3 = 21

Reorder the terms:
-3 + -3m = 21

Solving
-3 + -3m = 21

Solving for variable 'm'.

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

Add '3' to each side of the equation.
-3 + 3 + -3m = 21 + 3

Combine like terms: -3 + 3 = 0
0 + -3m = 21 + 3
-3m = 21 + 3

Combine like terms: 21 + 3 = 24
-3m = 24

Divide each side by '-3'.
m = -8

Simplifying
m = -8

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