The solution to the equation $8 + 5$ is:

$8 + 5 = 13$

Would you like more details or have any other questions?

Here are 5 more questions you might consider asking:

1. What is the value of $15 - 7$?
2. How do you multiply two numbers?
3. What is the derivative of $x^3$?
4. Can you explain how to solve a system of linear equations?
5. What is the area of a triangle with base 4 and height 3?

Tip: When working with addition, lining up the numbers vertically can help ensure that you add each digit correctly, especially for larger numbers.