U=3(7n+35)+4(n+1)

Solution for U=3(7n+35)+4(n+1) equation:

Simplifying
U = 3(7n + 35) + 4(n + 1)

Reorder the terms:
U = 3(35 + 7n) + 4(n + 1)
U = (35 * 3 + 7n * 3) + 4(n + 1)
U = (105 + 21n) + 4(n + 1)

Reorder the terms:
U = 105 + 21n + 4(1 + n)
U = 105 + 21n + (1 * 4 + n * 4)
U = 105 + 21n + (4 + 4n)

Reorder the terms:
U = 105 + 4 + 21n + 4n

Combine like terms: 105 + 4 = 109
U = 109 + 21n + 4n

Combine like terms: 21n + 4n = 25n
U = 109 + 25n

Solving
U = 109 + 25n

Solving for variable 'U'.

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

Simplifying
U = 109 + 25n