M+m+1+m+2+m+3=137

Solution for M+m+1+m+2+m+3=137 equation:

Simplifying
M + m + 1 + m + 2 + m + 3 = 137

Reorder the terms:
1 + 2 + 3 + M + m + m + m = 137

Combine like terms: 1 + 2 = 3
3 + 3 + M + m + m + m = 137

Combine like terms: 3 + 3 = 6
6 + M + m + m + m = 137

Combine like terms: m + m = 2m
6 + M + 2m + m = 137

Combine like terms: 2m + m = 3m
6 + M + 3m = 137

Solving
6 + M + 3m = 137

Solving for variable 'M'.

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

Add '-6' to each side of the equation.
6 + M + -6 + 3m = 137 + -6

Reorder the terms:
6 + -6 + M + 3m = 137 + -6

Combine like terms: 6 + -6 = 0
0 + M + 3m = 137 + -6
M + 3m = 137 + -6

Combine like terms: 137 + -6 = 131
M + 3m = 131

Add '-3m' to each side of the equation.
M + 3m + -3m = 131 + -3m

Combine like terms: 3m + -3m = 0
M + 0 = 131 + -3m
M = 131 + -3m

Simplifying
M = 131 + -3m