1. **State the problem:** We need to find the sum of 2 and 5. 2. **Formula used:** Addition of two numbers is given by $a + b$. 3. **Apply the formula:** Here, $a = 2$ and $b = 5$, so we calculate: $$2 + 5$$ 4. **Calculate the sum:** Adding 2 and 5 gives: $$7$$ 5. **Final answer:** The sum of 2 and 5 is 7.