35/72 cannot be simplified because there is no number (other than one) that divides both 35 and 72 evenly.
35 = 5 x 7.
72 = 2 x 2 x 2 x 3 x 3.
Notice that 72 has no 5s in it, and no 7s. 35 has no 2s in it and no 3s.
It is: 72/171 = 8/19 simplified
47/72 is already simplified
It is: 72/96 = 3/4 simplified
-13/72 cannot be simplified.
55/72
It is: 35/85 = 7/17 simplified
It is: 35/525 = 1/15 simplified
24/35 cannot be simplified further.
35/80 simplified is 7/16.
No.
It is 72/100, which can be simplified, if required.
52/72 = 13/18