42=-2(n+6)+m

Solution for 42=-2(n+6)+m equation:

Simplifying
42 = -2(n + 6) + m

Reorder the terms:
42 = -2(6 + n) + m
42 = (6 * -2 + n * -2) + m
42 = (-12 + -2n) + m

Reorder the terms:
42 = -12 + m + -2n

Solving
42 = -12 + m + -2n

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
42 + -1m = -12 + m + -1m + -2n

Combine like terms: m + -1m = 0
42 + -1m = -12 + 0 + -2n
42 + -1m = -12 + -2n

Add '-42' to each side of the equation.
42 + -42 + -1m = -12 + -42 + -2n

Combine like terms: 42 + -42 = 0
0 + -1m = -12 + -42 + -2n
-1m = -12 + -42 + -2n

Combine like terms: -12 + -42 = -54
-1m = -54 + -2n

Divide each side by '-1'.
m = 54 + 2n

Simplifying
m = 54 + 2n