LCM of 3 and 9

What is the LCM of 3 and 9? - The LCM of 3 and 9 is 9. Follow the step by step instructions on how to find the least common multiple of 3 and 9.

What is the least common multiple of 3 and 9?

How to find the lcm of 3 and 9?

To find the lcm of 3 and 9, we first need to find the multiples of 3 and 9 and then choose the least common multiple that are dividable by 3 and 9.

Multiples of 3 = 3, 6, 9
Multiples of 9 = 9

The least common multiple of 3 and 9 is 9, because 9 is the smallest number that is divisible by both 3 and 9.

Another method to find the least common multiple of 3 and 9 is by using the prime factorization method.
To use prime factorization, we first need to find the prime factors of 3 and 9, and then get the LCM by multiplying the prime factors that are rasied to their highest power from the two sets.

Prime factorization of 3 = 3
Prime factorization of 9 = 3 x 3 = 3²
Prime factors to the highest power = 3² = 9