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Thread: What are inverses or reciprocals of (3/4)/5, (9/10)/1, and (5/7)/(7/8) ?

  1. #11
    Senior Member
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    Nov 2017
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    Quote Originally Posted by KWF View Post
    I believe that my reciprocal examples are incorrect. They should be 5/(3/4), 1/(9/10), and (7/5)/(5/7). tkhunny provided an excellent example that helped my see how to make the reciprocal of these complex fractions.

    I can prove that these are correct by multiplying them as follows:

    (3/4)/ 5 * 5/(3/4) = 1

    (9/10)/1 * 1/(9/10) = 1

    (5/7)/(7/8) * (7/8)/(5/7) = 1

    A fraction multiplied by its reciprocal is one (1).
    Correct -- except that you had another typo when you wrote (7/5)/(5/7), meaning (7/8)/(5/7) as you wrote later.

  2. #12
    Junior Member
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    Feb 2010
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    Quote Originally Posted by Dr.Peterson View Post
    Correct -- except that you had another typo when you wrote (7/5)/(5/7), meaning (7/8)/(5/7) as you wrote later.

    Thanks for bringing that error to my attention! I'll proof read more carefully in the future.
    Last edited by KWF; 12-24-2017 at 05:15 PM.

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