The LCM of 18 and 24 is 72.
The simplest way to determine the LCM of two numbers is by listing their multiples until you reach a common multiple.
Multiples of 18: 18, 36, 54, 72, 90, 108, 126...
Multiples of 24: 24, 48, 72, 96, 120, 144....
So, the first one common among them is 72. Read more