Question: User: 9-3
1. **State the problem:** Calculate the result of $9 - 3$.
2. **Formula used:** Subtraction of two numbers is given by $a - b$, where $a$ and $b$ are numbers.
3. **Calculation:**
$$9 - 3 = 6$$
4. **Explanation:** Subtraction means taking away the second number from the first. Here, taking away $3$ from $9$ leaves $6$.
5. **Final answer:** $6$