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Home > CC1 > Chapter 8 > Lesson 8.1.4 > Problem 8-59


Write the prime factorization of each number listed below. Then find the least common multiple and the greatest common factor of each pair of numbers.  Homework Help ✎

  1.  and 

    Factor both numbers. The number or numbers they both have are the GCF.
    In this case, it is .

    Prime factorization:

    Check the multiples of the larger number, 24, until you find one divisible by the smaller number, 3.
    Start with (24)(1).

    LCM is 24.
    GCF is 3.

  1. and 9

    Refer to the steps for part (a).

    7 is a prime number, which means its only factors are 1 and itself.

  1. and

    Refer to the steps for part (a).

    LCM is . Can you find the greatest common factor?