u=3(7n+34)+7(n+1)

Solution for u=3(7n+34)+7(n+1) equation:

Simplifying
u = 3(7n + 34) + 7(n + 1)

Reorder the terms:
u = 3(34 + 7n) + 7(n + 1)
u = (34 * 3 + 7n * 3) + 7(n + 1)
u = (102 + 21n) + 7(n + 1)

Reorder the terms:
u = 102 + 21n + 7(1 + n)
u = 102 + 21n + (1 * 7 + n * 7)
u = 102 + 21n + (7 + 7n)

Reorder the terms:
u = 102 + 7 + 21n + 7n

Combine like terms: 102 + 7 = 109
u = 109 + 21n + 7n

Combine like terms: 21n + 7n = 28n
u = 109 + 28n

Solving
u = 109 + 28n

Solving for variable 'u'.

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

Simplifying
u = 109 + 28n