The answer is 4/10 or the simplified answer is 2/5
The answer is the last one with Amir as the 5 is the extra, and the 3 is multiplied by x or in this case days, and it is at least not equal.
First, you have to make the denominators the same.
5 1/3 is now 5 4/12
4 3/4 is now 4 9/12
5 4/12
- 4 9/12
4 16/12
- 4 9/12
7/12
Hope this helps!