Answer:
34.
Explanation:
if you start by adding 13 + 19 first it would make it easier for you to add the 2. because 13 + 19 = 32 + 2 = 34. you could also do 19 + 2 first, then add the 13, it would be the same process just a different way.
((Apologies if this is not what your looking for, its a bit complicated to make a "sofisticated" answer for a simple problem lol ))