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thaheckster

  • 3 years ago

How do I find the greatest common factor of something like 117 and 195? Whats the easiest way?

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  1. uzma
    • 3 years ago
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    write down the prime factors of both GCF is the product of common factors

  2. 3pwood
    • 3 years ago
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    List the factors of both numbers 117: 1 3 9 13 39 117 195: 1 3 5 13 15 39 65 195 Biggest one looks to be: 39

  3. thaheckster
    • 3 years ago
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    numbers that go into 117?

  4. uzma
    • 3 years ago
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    117=3*3*13 195=5*3*13 GCF=3*13=39

  5. thaheckster
    • 3 years ago
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    thank you!

  6. thaheckster
    • 3 years ago
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    my brain is so slow at this lol

  7. uzma
    • 3 years ago
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    u got it? slow or fast doesnt matter much

  8. thaheckster
    • 3 years ago
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    so I list all the numbers that can go into 117?

  9. uzma
    • 3 years ago
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    once u learn the technique, with practice u would be fast in calculations too

  10. thaheckster
    • 3 years ago
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    I have been out of school for awhile

  11. thaheckster
    • 3 years ago
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    I hope one day I can grasp this as well as you!

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