What is the gcf of 42 and 70.?

Mathematics · High School · Mon Jan 18 2021

Answered on

  1. Find the prime factorization of 42
    42 = 2 × 3 × 7
  2. Find the prime factorization of 70
    70 = 2 × 5 × 7
  3. To find the GCF multiply all the prime factors common to both numbers:
    So
  4. GCF = 2 × 7
  5. GCF = 14