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9 November, 12:12

Greatest common factor of 8a and 18a

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Answers (2)
  1. 9 November, 12:13
    0
    Ignore the a and add it at the end, because we know that both 8a and 18a are divisible by a

    factors of 8:

    1

    8

    4

    2

    factors of 18:

    1

    18

    2

    9

    3

    6

    the highest number that both of them have in common is 2, so the GCF of 8a and 18a is 2a
  2. 9 November, 12:15
    0
    8a = 2 * 2 * 2 * a

    18a = 2 * 3 * 3 * a

    2 and a are common factors, therefore the GCM of 8a and 18a is 2a.
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