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What is the LCM of 70 and 400?

The LCM of 70 and 400 is 2800.

Steps to find LCM

  1. Find the prime factorization of 70
    70 = 2 × 5 × 7
  2. Find the prime factorization of 400
    400 = 2 × 2 × 2 × 2 × 5 × 5
  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 × 5 × 5 × 7
  4. LCM = 2800

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