Question: User: 1+1
1. **State the problem:** Calculate the sum of $1 + 1$.
2. **Formula used:** Addition of two numbers is given by $$a + b$$ where $a$ and $b$ are numbers.
3. **Calculation:**
$$1 + 1 = 2$$
4. **Explanation:** Adding one and one together results in two because addition combines quantities.
5. **Final answer:**
$$2$$