U=2(9n+31)+9(n+1)

Solution for U=2(9n+31)+9(n+1) equation:

Simplifying
U = 2(9n + 31) + 9(n + 1)

Reorder the terms:
U = 2(31 + 9n) + 9(n + 1)
U = (31 * 2 + 9n * 2) + 9(n + 1)
U = (62 + 18n) + 9(n + 1)

Reorder the terms:
U = 62 + 18n + 9(1 + n)
U = 62 + 18n + (1 * 9 + n * 9)
U = 62 + 18n + (9 + 9n)

Reorder the terms:
U = 62 + 9 + 18n + 9n

Combine like terms: 62 + 9 = 71
U = 71 + 18n + 9n

Combine like terms: 18n + 9n = 27n
U = 71 + 27n

Solving
U = 71 + 27n

Solving for variable 'U'.

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

Simplifying
U = 71 + 27n