1. **State the problem:** Calculate the sum of 2 and 9.
2. **Formula used:** Addition of two numbers is given by $a + b$.
3. **Apply the formula:** Here, $a = 2$ and $b = 9$.
4. **Calculate:**
$$2 + 9 = 11$$
5. **Conclusion:** The sum of 2 and 9 is 11.
Simple Addition 0751B5
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