2(-21-3m)=-30

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Solution for 2(-21-3m)=-30 equation: 


Simplifying
2(-21 + -3m) = -30
(-21 * 2 + -3m * 2) = -30
(-42 + -6m) = -30

Solving
-42 + -6m = -30

Solving for variable 'm'.

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

Add '42' to each side of the equation.
-42 + 42 + -6m = -30 + 42

Combine like terms: -42 + 42 = 0
0 + -6m = -30 + 42
-6m = -30 + 42

Combine like terms: -30 + 42 = 12
-6m = 12

Divide each side by '-6'.
m = -2

Simplifying
m = -2

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