-1=m+1+m

Solution for -1=m+1+m equation:

Simplifying
-1 = m + 1 + m

Reorder the terms:
-1 = 1 + m + m

Combine like terms: m + m = 2m
-1 = 1 + 2m

Solving
-1 = 1 + 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.
-1 + -2m = 1 + 2m + -2m

Combine like terms: 2m + -2m = 0
-1 + -2m = 1 + 0
-1 + -2m = 1

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

Combine like terms: -1 + 1 = 0
0 + -2m = 1 + 1
-2m = 1 + 1

Combine like terms: 1 + 1 = 2
-2m = 2

Divide each side by '-2'.
m = -1

Simplifying
m = -1