No.
47/72 is already simplified
It is: 72/96 = 3/4 simplified
-13/72 cannot be simplified.
3/5 is simplified by 33/55
no
It is 11/12 when simplified (divide both the 55 and 60 by 5).
72/100 = 18/25
72/83 is simplified.
It is 72/100, which can be simplified, if required.
52/72 = 13/18
Simplified.. 48/72 = 2/3