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Math Help - Need more help

  1. #1
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    Smile Need more help

    What is the difference between 126 1/4 and 78 2/3
    A) 58 5/12
    B) 57 7/12
    C) 48 1/3
    D) 47 7/12

    My answer is d

    What do you think?
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  2. #2
    MHF Contributor Quick's Avatar
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    Before anyone goes on to answer your question, I have a question for you. Are you learning anything? Has this site been a useful guide or just a homework checker?
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  3. #3
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    This site been very useful and helpful toward my learning of math
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  4. #4
    MHF Contributor Quick's Avatar
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    Quote Originally Posted by Angel King
    This site been very useful and helpful toward my learning of math
    [sarcasm] suuuuuuuuuuure [/sarcasm]

    What is the difference between 126 1/4 and 78 2/3
    we have the numbers 126\frac{1}{4} and 78\frac{2}{3}

    we have to find the value of 126\frac{1}{4}-78\frac{2}{3}

    simplify: \frac{1+126\times4}{4}-\frac{2+78\times3}{3}

    multiply: \frac{1+504}{4}-\frac{2+234}{3}

    add: \frac{505}{4}-\frac{236}{3}

    find like denominators: \frac{505\times3}{4\times3}-\frac{236\times4}{3\times4}

    multiply: \frac{1515}{12}-\frac{944}{12}

    combine fractions: \frac{1515-944}{12}

    subtract: \frac{571}{12}

    simplify: \boxed{47\frac{7}{12}}

    therefore the answer is d
    Last edited by Quick; August 24th 2006 at 06:23 PM.
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