The lowest common multiple (LCM) is: 72
The lowest common multiple is 36
The Least Common Multiple of 18 and 21 is 126.
The lowest common multiple of 18 and 54 is 108. 54 times 2 equals 108, and 18 times 6 equals 108.
The LCM is: 36
The least common multiple of 12 , 18 , 26 = 468