Question

1. n + 4 - 9 - 5n

Explanation:

Step1: Combine like terms for \(n\)

We have \(n - 5n\), which is \((1 - 5)n=-4n\).

Step2: Combine constant terms

We have \(4 - 9=-5\).

Step3: Combine the results

Putting the two results together, we get \(-4n-5\).

Answer:

\(-4n - 5\)