Question

What is the answer and how do you do the work

Answer 1

Answer: $\frac{3n - 8}{4n^{2} }$ 

Explanation: 

First you need to factor out the GCF (greatest common factor) of the numbers, which is 8n. 
$\frac{24n^{2} - 64 n}{32n^{3} } = \frac{8n(3n - 8)}{8n(4n^{2}) }$ 
The GCF cancels out on top and bottom so it becomes:
$\frac{3n - 8}{4n^{2}}$