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18 March, 00:56

Find the gcf of 12 and 45

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Answers (2)
  1. 18 March, 02:16
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    gcf = 3

    the factors of 12 are 1, 2, 3, 4, 6 and 12

    the factors of 45 are 1, 3, 5, 9, 15 and 45

    the greatest common factor of 12 and 45 is 3
  2. 18 March, 03:30
    0
    Step one: find the prime factorization of 12

    12 = 2 x 2 x 3

    Step two: fine the prime factorization of 45

    45 = 3 x 3 x 5

    Step three: to find the GCF, multiply all the prime factors common to both numbers:

    Therefore, GCF is 3
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