Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » LCM of two numbers

What is the LCM of 21 and 45?

The lcm of 21 and 45 is 315.

Steps to find LCM

  1. Find the prime factorization of 21
    21 = 3 × 7
  2. Find the prime factorization of 45
    45 = 3 × 3 × 5
  3. Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

    LCM = 3 × 3 × 5 × 7
  4. LCM = 315

Find least common multiple (lcm) of:

LCM Calculator

Enter two numbers separate by comma. To find lcm of more than two numbers, click here.

© everydaycalculation.com