It is not possible to give a sensible answer to this question. The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question even though it may appear to be two! 27 over 60 is a single ratio.
The LCM is: 540
540
The LCM of 20 and 12 is 60.39/60 - 35/60 = 4/60 or 1/15
27/60 = 9/20
The LCM is 60.
The LCM is 60.
The LCM is 60
LCM of 72 and 27 is 216.
The LCM of 30 and 60 is 60
lcm(20, 60) = 60.
LCM(15, 20, 30) = 60
The answer is 60.