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What is the LCM of 18 and 27?

The LCM of 18 and 27 is 54.

Steps to find LCM

  1. Find the prime factorization of 18
    18 = 2 × 3 × 3
  2. Find the prime factorization of 27
    27 = 3 × 3 × 3
  3. Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

    LCM = 2 × 3 × 3 × 3
  4. LCM = 54

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