LCM( 30, 50 ) = 150
Write down multiples of each number until you find the first common multiple:
The multipliers of 30 are: 30, 60, 90, 120, 150, 180, . . .
The multipliers of 50 are: 50, 100, 150, 200, . . .
We can see that:
LCM( 30, 50 ) = 150
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.