m+3+(m+-4)=16

Solution for m+3+(m+-4)=16 equation:

Simplifying
m + 3 + (m + -4) = 16

Reorder the terms:
m + 3 + (-4 + m) = 16

Remove parenthesis around (-4 + m)
m + 3 + -4 + m = 16

Reorder the terms:
3 + -4 + m + m = 16

Combine like terms: 3 + -4 = -1
-1 + m + m = 16

Combine like terms: m + m = 2m
-1 + 2m = 16

Solving
-1 + 2m = 16

Solving for variable 'm'.

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

Add '1' to each side of the equation.
-1 + 1 + 2m = 16 + 1

Combine like terms: -1 + 1 = 0
0 + 2m = 16 + 1
2m = 16 + 1

Combine like terms: 16 + 1 = 17
2m = 17

Divide each side by '2'.
m = 8.5

Simplifying
m = 8.5