Question

How do you find the Least common multiple of 15, 6?

Answer 1

`lcm(6,15)=30`

Explanation:

list multiples of each number and pick out teh common ones.

multiples 6:`{6,12,18,24,30,36,42,48,60, ...}`

multiples of 15:`{15,30,45,60,75,..}`

the common multiples are seen to be :`{30,60,..}`

`lcm(6,15)=30`