-3(-1-3m)=13m+4m

Solution for -3(-1-3m)=13m+4m equation:

Simplifying
-3(-1 + -3m) = 13m + 4m
(-1 * -3 + -3m * -3) = 13m + 4m
(3 + 9m) = 13m + 4m

Combine like terms: 13m + 4m = 17m
3 + 9m = 17m

Solving
3 + 9m = 17m

Solving for variable 'm'.

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

Add '-17m' to each side of the equation.
3 + 9m + -17m = 17m + -17m

Combine like terms: 9m + -17m = -8m
3 + -8m = 17m + -17m

Combine like terms: 17m + -17m = 0
3 + -8m = 0

Add '-3' to each side of the equation.
3 + -3 + -8m = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -8m = 0 + -3
-8m = 0 + -3

Combine like terms: 0 + -3 = -3
-8m = -3

Divide each side by '-8'.
m = 0.375

Simplifying
m = 0.375