No.
It can be reduced from 16/240 to 1/15
The fraction 15/16 cannot be reduced any more.
15/16
75/80 = 15/16 75/80 = 15/16 75/80 = 15/16 75/80 = 15/16
63/48 = 15/16
5/16 cannot be reduced further.
It cannot be reduced.
1/16 cannot be reduced. In fact, no unit fraction can be reduced.
15/72 = 5/24 reduced
11/15 cannot be reduced further.
75/16 cannot be reduced further.