u=4(3n+31)+5(n+1)

Solution for u=4(3n+31)+5(n+1) equation:

Simplifying
u = 4(3n + 31) + 5(n + 1)

Reorder the terms:
u = 4(31 + 3n) + 5(n + 1)
u = (31 * 4 + 3n * 4) + 5(n + 1)
u = (124 + 12n) + 5(n + 1)

Reorder the terms:
u = 124 + 12n + 5(1 + n)
u = 124 + 12n + (1 * 5 + n * 5)
u = 124 + 12n + (5 + 5n)

Reorder the terms:
u = 124 + 5 + 12n + 5n

Combine like terms: 124 + 5 = 129
u = 129 + 12n + 5n

Combine like terms: 12n + 5n = 17n
u = 129 + 17n

Solving
u = 129 + 17n

Solving for variable 'u'.

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

Simplifying
u = 129 + 17n