LCM( 9, 27, 2 ) = 54
Write down multiples of each number until you find the first common multiple:
The multipliers of 9 are: 9, 18, 27, 36, 45, 54, 63, . . .
The multipliers of 27 are: 27, 54, 81, . . .
The multipliers of 2 are: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, . . .
We can see that:
LCM( 9, 27, 2 ) = 54
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.