-15+-27=m

Solution for -15+-27=m equation:

Simplifying
-15 + -27 = m

Combine like terms: -15 + -27 = -42
-42 = m

Solving
-42 = m

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 = m + -1m

Combine like terms: m + -1m = 0
-42 + -1m = 0

Add '42' to each side of the equation.
-42 + 42 + -1m = 0 + 42

Combine like terms: -42 + 42 = 0
0 + -1m = 0 + 42
-1m = 0 + 42

Combine like terms: 0 + 42 = 42
-1m = 42

Divide each side by '-1'.
m = -42

Simplifying
m = -42