42=2(-M+36)

Solution for 42=2(-M+36) equation:

Simplifying
42 = 2(-1M + 36)

Reorder the terms:
42 = 2(36 + -1M)
42 = (36 * 2 + -1M * 2)
42 = (72 + -2M)

Solving
42 = 72 + -2M

Solving for variable 'M'.

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

Add '2M' to each side of the equation.
42 + 2M = 72 + -2M + 2M

Combine like terms: -2M + 2M = 0
42 + 2M = 72 + 0
42 + 2M = 72

Add '-42' to each side of the equation.
42 + -42 + 2M = 72 + -42

Combine like terms: 42 + -42 = 0
0 + 2M = 72 + -42
2M = 72 + -42

Combine like terms: 72 + -42 = 30
2M = 30

Divide each side by '2'.
M = 15

Simplifying
M = 15