What is the LCM of 70 and 42?

The lcm of 70 and 42 is 210.

Steps to find LCM

  1. Find the prime factorization of 70
    70 = 2 × 5 × 7
  2. Find the prime factorization of 42
    42 = 2 × 3 × 7
  3. Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

    LCM = 2 × 3 × 5 × 7
  4. LCM = 210
MathSolver: Math solution with steps

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