This website is ideal viewed with Javascript. If you space unable to turn on Javascript, you re welcome click here.
You are watching: What is the lcm of 3 and 21
We think you wrote:
lcm(3,15,21)
This encounters the least typical multiple (LCM) by prime factorization.
1. find the prime factors of 3
2. discover the prime determinants of 15
See more: What Is The Correct Definition Of Refusal Skills? Refusal Skills Definition
The prime factors of 15 are 3 and also 5.
Determine the maximum number of times every prime variable (3, 5, 7) occurs in the administer of the offered numbers: