m+n+(n+1)=30

Solution for m+n+(n+1)=30 equation:

Simplifying
m + n + (n + 1) = 30

Reorder the terms:
m + n + (1 + n) = 30

Remove parenthesis around (1 + n)
m + n + 1 + n = 30

Reorder the terms:
1 + m + n + n = 30

Combine like terms: n + n = 2n
1 + m + 2n = 30

Solving
1 + m + 2n = 30

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 + m + -1 + 2n = 30 + -1

Reorder the terms:
1 + -1 + m + 2n = 30 + -1

Combine like terms: 1 + -1 = 0
0 + m + 2n = 30 + -1
m + 2n = 30 + -1

Combine like terms: 30 + -1 = 29
m + 2n = 29

Add '-2n' to each side of the equation.
m + 2n + -2n = 29 + -2n

Combine like terms: 2n + -2n = 0
m + 0 = 29 + -2n
m = 29 + -2n

Simplifying
m = 29 + -2n