-3m-21=-6

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Solution for -3m-21=-6 equation: 


Simplifying
-3m + -21 = -6

Reorder the terms:
-21 + -3m = -6

Solving
-21 + -3m = -6

Solving for variable 'm'.

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

Add '21' to each side of the equation.
-21 + 21 + -3m = -6 + 21

Combine like terms: -21 + 21 = 0
0 + -3m = -6 + 21
-3m = -6 + 21

Combine like terms: -6 + 21 = 15
-3m = 15

Divide each side by '-3'.
m = -5

Simplifying
m = -5

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