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Dawson4070

  • 3 years ago

Can anyone show me how to find the GCF of 72 and 78?

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  1. gdogthegirl
    • 3 years ago
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    http://www.helpwithfractions.com/math-homework-helper/greatest-common-factor/

  2. Dawson4070
    • 3 years ago
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    Hello, thanks for responding to my question.

  3. Dawson4070
    • 3 years ago
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    Are you there?

  4. Dawson4070
    • 3 years ago
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    Hello and thanks for responding

  5. nphuongsun93
    • 3 years ago
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    \[72 = 2 \times 2 \times 2 \times 3 \times3\]\[78 = 2 \times 3 \times 13\]what factors do 72 and 78 have in common?

  6. Dawson4070
    • 3 years ago
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    2 and 3

  7. nphuongsun93
    • 3 years ago
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    so GCF = 2 * 3 ~

  8. Dawson4070
    • 3 years ago
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    Wowwww, so its the numbers 2 and 3, not just one of the numbers?

  9. nphuongsun93
    • 3 years ago
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    2 times 3 = 6 = gcf ~ 6 is the gcf

  10. Dawson4070
    • 3 years ago
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    So is 6 the GCF for both numbers

  11. nphuongsun93
    • 3 years ago
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    yes

  12. Dawson4070
    • 3 years ago
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    now that was a little confusing!! lol

  13. nphuongsun93
    • 3 years ago
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    72 can divide by 1, 2, 3, 4, 6, 8, 12, 18, 24, 36, 72 78 can divide by 1, 2, 3, 6, 13, 26, 39, 78. so 6 is the greatest common factors

  14. nphuongsun93
    • 3 years ago
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    the way i did earlier was |dw:1348610984777:dw|

  15. Dawson4070
    • 3 years ago
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    I got all your notes.. I have one more of these... GCF of 42 and 48.. I'm going to post this question. Maybe you will be able to come back.

  16. nphuongsun93
    • 3 years ago
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    we can do that here if you want ~ ur turn to write down factors of 42 and 48, or all the numbers they can divide

  17. Dawson4070
    • 3 years ago
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    when I add another question , it doesn't save the second question to my file/folder. I need to post the question, Give me a second.

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