The expression given is:

$n + 8n - 6n$

To simplify this expression:

1. Combine the terms involving $n$: $n + 8n - 6n = (1n + 8n - 6n)$

2. Add/subtract the coefficients of $n$: $1n + 8n = 9n$ $9n - 6n = 3n$

So, the expression simplifies to:

$3n$

Equivalent expression: $3n$

Would you like more details or have any questions?

Here are 5 related questions:

1. How do you combine like terms in algebraic expressions?
2. What are coefficients in an algebraic expression?
3. How would the expression change if there were constants (e.g., $n + 8n - 6n + 4$)?
4. How do you solve for $n$ in more complex equations?
5. What is the difference between a variable and a coefficient?

Tip: When simplifying expressions, always combine like terms first.