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What is the LCM of 45 and 16?

The lcm of 45 and 16 is 720.

Steps to find LCM

  1. Find the prime factorization of 45
    45 = 3 × 3 × 5
  2. Find the prime factorization of 16
    16 = 2 × 2 × 2 × 2
  3. Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

    LCM = 2 × 2 × 2 × 2 × 3 × 3 × 5
  4. LCM = 720

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