The sum of $5 + 9$ is $14$.

Would you like more details or have any questions? Here are five more questions you can ask:

1. What is the derivative of $x^2 + 3x + 2$?
2. How do you solve a quadratic equation?
3. What is the integral of $\sin(x)$?
4. Can you explain the Pythagorean theorem?
5. How do you find the area of a circle?

Tip: When adding numbers, you can also use the commutative property, which means the order of the numbers doesn't matter: $a + b = b + a$.