No
53/45 cannot be simplified further.
No, because 53 is a prime number.
-53/20 = -213/20
Yes, to: 1 36/53
15/43 is simplified.
It can not be simplified further.
15/48 is simplified to 5 over 16
53/72 is already in its most simplified form.
The simplified fraction of 15 over 63 is 5/21
It can't be simplified.
15/81 can be simplified to 5/27
4 over 15 is already simplified and can't be simplified further.