it is 6 over 5 or one and a fifth. because both #s are divisable by 3.
5/6 is.
15/90 = 3/18 = 1/6
5 over 6. However, this is a fraction, not a ratio
15/43 is simplified.
It can not be simplified further.
87/18 = 29/6 when simplified
109/18 cannot be simplified further.
241/18 cannot be simplified further.
15/48 is simplified to 5 over 16
It is already simplified.
1
11/18 cannot be simplified - 11 is a prime number !