Answer: No, you cannot simplify 13/36. 13 and 36 don't have any factors that are related to one another.
Explanation:
Proof:
Factors of 13: 1, 13
Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
The two numbers don't have any factors that are the same that can simplify the fraction. This is mostly because 13 is prime number, meaning that the only factors of it is 1 and itself. So, the fraction 13/36 cannot be simplified.