38 over 50 simplified = 19/25
50/91 is already simplified.
It can not be simplified further.
13/9 cannot be simplified.
Already simplified!
It is already simplified.
-13/72 cannot be simplified.
Yes, it is simplified.
It is already simplified.
No. 13 is a prime number and cannot be simplified.
It is: 13/52 = 1/4 simplified
13/20 cannot be simplified further.