u=2(9n+30)+9(n+1)

Solution for u=2(9n+30)+9(n+1) equation:

Simplifying
u = 2(9n + 30) + 9(n + 1)

Reorder the terms:
u = 2(30 + 9n) + 9(n + 1)
u = (30 * 2 + 9n * 2) + 9(n + 1)
u = (60 + 18n) + 9(n + 1)

Reorder the terms:
u = 60 + 18n + 9(1 + n)
u = 60 + 18n + (1 * 9 + n * 9)
u = 60 + 18n + (9 + 9n)

Reorder the terms:
u = 60 + 9 + 18n + 9n

Combine like terms: 60 + 9 = 69
u = 69 + 18n + 9n

Combine like terms: 18n + 9n = 27n
u = 69 + 27n

Solving
u = 69 + 27n

Solving for variable 'u'.

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

Simplifying
u = 69 + 27n