The expression \( n + 4 - 9 - 5n \) can be simplified by combining like terms.

1. Combine the \( n \) and \( -5n \) terms:
   \[
   n - 5n = -4n
   \]

2. Now, combine the constant terms \( 4 \) and \( -9 \):
   \[
   4 - 9 = -5
   \]

Thus, the simplified expression is:
\[
-4n - 5
\]

Would you like further details or have any questions?

Here are 5 related questions for further exploration:
1. What is the value of \( n \) if \( -4n - 5 = 0 \)?
2. How would the expression change if the constant was \( +9 \) instead of \( -9 \)?
3. Can you solve for \( n \) in the equation \( -4n - 5 = 15 \)?
4. What happens if you distribute a factor across this expression, such as \( 2(-4n - 5) \)?
5. How can this expression be plotted on a graph?

**Tip:** Always combine like terms (such as constants or variables) as the first step when simplifying algebraic expressions.

Learn how to simplify the algebraic expression n + 4 - 9 - 5n by combining like terms. This step-by-step solution explains the process, covering essential algebraic concepts. Suitable for students in Grades 6-8.

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