The expression you provided, $\frac{4}{x} - 3$, represents a fraction followed by a subtraction.

Is this what you're looking for? If so, we can perform operations like solving for $x$ or simplifying the expression depending on your needs.

Let me know if you'd like details or clarifications. Here are five related questions:

1. Do you want to solve $\frac{4}{x} - 3 = 0$ for $x$?
2. Are you interested in plotting the graph of $f(x) = \frac{4}{x} - 3$?
3. Would you like to explore the asymptotes and behavior of this function as $x$ approaches 0?
4. Should we find the domain and range of $f(x) = \frac{4}{x} - 3$?
5. Are there any constraints or conditions on $x$ you'd like to apply?

Tip: Remember that functions involving $x$ in the denominator have undefined values where the denominator equals zero.