u=2(9n+35)+3(n+1)

Solution for u=2(9n+35)+3(n+1) equation:

Simplifying
u = 2(9n + 35) + 3(n + 1)

Reorder the terms:
u = 2(35 + 9n) + 3(n + 1)
u = (35 * 2 + 9n * 2) + 3(n + 1)
u = (70 + 18n) + 3(n + 1)

Reorder the terms:
u = 70 + 18n + 3(1 + n)
u = 70 + 18n + (1 * 3 + n * 3)
u = 70 + 18n + (3 + 3n)

Reorder the terms:
u = 70 + 3 + 18n + 3n

Combine like terms: 70 + 3 = 73
u = 73 + 18n + 3n

Combine like terms: 18n + 3n = 21n
u = 73 + 21n

Solving
u = 73 + 21n

Solving for variable 'u'.

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

Simplifying
u = 73 + 21n