You have to add those two together, so your problem would look like this:
5 (your whole mumber)
9/13 (your fraction)
5 9/13 + 5 9/13 = 10 - the whole number
9/13 + 9/13 = 18/13 since the denomentator always stays the same! (the bottom half) so, we have to make 18/13 a proper fraction since its mixed right now. To do that, we need to subtract the numerator (the top) and the denomentator to see how many times 13 can go into 18. So what you do is 18-13 and you get 5 left. It only went in once, so you would add to your whole number you had previously which was 10. You get 11, and since you had left your fraction would look like 5/13.
Therefore, your answer would be 11 5/13.
Hope this helped!