LCM( 10, 14 ) = 70
Write down multiples of each number until you find the first common multiple:
The multipliers of 10 are: 10, 20, 30, 40, 50, 60, 70, 80, . . .
The multipliers of 14 are: 14, 28, 42, 56, 70, 84, . . .
We can see that:
LCM( 10, 14 ) = 70
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.