If it the question is 3 and 1/3, then
3 and 1/3 = 3* (3/3) + 1/3 since 3/3 is just 1. Multiplying anything by 1 is itself!
9/3 + 1/3 = 10/3
The denominators are the same so you can just add the numerators
Then:
10/3 - 5/6 = 20/6 - 5/6
Same as before, you multiply 10/3 by 2/2 to have the same denominator as 5/6
20/6 - 5/6 = 15/6
Simplify
5/2