Combine any like terms in the expression. if there are no like terms, rewrite the expression.
5u+5u+u

Like terms are terms that have the same variable, in this case the varible on all of varible of all them is u
So they can all be combined to equal 11u

If there a letter in front of the number and the letters are the same, add the numbers up. If there's only a letter without a number, it's one.

So everything is (11u)

Then why is the question on here if you know the answer