-42+20=-2m+13m

Solution for -42+20=-2m+13m equation:

Simplifying
-42 + 20 = -2m + 13m

Combine like terms: -42 + 20 = -22
-22 = -2m + 13m

Combine like terms: -2m + 13m = 11m
-22 = 11m

Solving
-22 = 11m

Solving for variable 'm'.

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

Add '-11m' to each side of the equation.
-22 + -11m = 11m + -11m

Combine like terms: 11m + -11m = 0
-22 + -11m = 0

Add '22' to each side of the equation.
-22 + 22 + -11m = 0 + 22

Combine like terms: -22 + 22 = 0
0 + -11m = 0 + 22
-11m = 0 + 22

Combine like terms: 0 + 22 = 22
-11m = 22

Divide each side by '-11'.
m = -2

Simplifying
m = -2