The LCD for 1/5 and 4/15 is 15.
28.
It is: 12
The LCD of 13, 14 and 15 is 2730 The LCD of 1/3, 1/4 and 1/5 is 60
The LCD for 4/7 and 3/5 is 35.
60
The LCD of 5/6 and 1/4 is 12.
The LCD for 1/5 and 4/15 is 15.
The LCD is 30.
5
288
1440
288
30
288
45
28.