Question

⑥ $9 - 6n - (-5n) - (-8)$

Explanation:

Step1: Simplify the signs

We know that subtracting a negative is like adding a positive. So, $9 - 6n - (-5n) - (-8)$ becomes $9 - 6n + 5n + 8$.

Step2: Combine like terms

First, combine the constant terms: $9 + 8 = 17$. Then, combine the terms with $n$: $-6n + 5n = -n$.

Step3: Write the final expression

Putting it together, we get $17 - n$.

Answer:

$17 - n$