To simplify the expression \( 5u + u + 6u \), you combine the like terms (which are all terms involving \( u \)):

\[
5u + u + 6u = (5 + 1 + 6)u = 12u
\]

So, the simplified expression is \( \boxed{12u} \).

Would you like to go over the steps in more detail, or do you have any questions?

Here are 5 related questions you might find useful:

1. How would you simplify \( 7x + 3x - 2x \)?
2. What is the simplified form of \( 4a + 5b + 3a \)?
3. If \( u = 2 \), what is the value of \( 12u \)?
4. How do you factor the expression \( 12u \) completely?
5. What is the result of multiplying \( 12u \) by \( 2 \)?

**Tip:** Always look for like terms when simplifying algebraic expressions. They can often be combined to make the expression simpler.

Learn how to simplify the algebraic expression 5u + u + 6u by combining like terms. This problem introduces key algebraic concepts such as combining coefficients of like terms. Suitable for students in Grades 6-8.

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