-3(m+6)=-42

Solution for -3(m+6)=-42 equation:

Simplifying
-3(m + 6) = -42

Reorder the terms:
-3(6 + m) = -42
(6 * -3 + m * -3) = -42
(-18 + -3m) = -42

Solving
-18 + -3m = -42

Solving for variable 'm'.

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

Add '18' to each side of the equation.
-18 + 18 + -3m = -42 + 18

Combine like terms: -18 + 18 = 0
0 + -3m = -42 + 18
-3m = -42 + 18

Combine like terms: -42 + 18 = -24
-3m = -24

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

Simplifying
m = 8