The equation is:

$3 - 8 = -5$

So, the result is $-5$.

Would you like more details or have any other questions?

Here are 5 related questions:

1. What is $5 - 9$?
2. Solve $2 - 7$.
3. What is $-4 + 6$?
4. Simplify $3 - 5 + 2$.
5. What is the absolute value of $-5$?

Tip: When subtracting a larger number from a smaller one, the result will be negative.