Yes: 1/20
92/260 = 23/65
It can not be simplified further.
13/9 cannot be simplified.
Yes, it is simplified.
It is already simplified.
-13/72 cannot be simplified.
13/100 cannot be further simplified.
260/1000 = 13/50
13/33 can't be simplified any further
No. 13 is a prime number and cannot be simplified.
13/20 cannot be simplified further.