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Math Help - dividing fractions

  1. #1
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    dividing fractions

    hi,
    im not too sure in doing this fraction correctly:

    dividing fractions-question.jpg

    as you can see i have put my workings under the question but i don't think its right. could someone please confirm if im correct or not! if i am wrong could you please point me in the right direction on how to solve this please.

    thanks!
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  2. #2
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    No, it's incorrect.

    Remember that \displaystyle \frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c}.

    You should also note that there is a common factor in the second fraction which you can cancel, and will make the problem unwravel...
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  3. #3
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    so i would get 2x+1/2 x 4/4x+2?
    if so how would i cancel the common factors? are the common factors 2x and 4x, 4 and 2??
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  4. #4
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    Start by factorising \displaystyle 4x + 2...
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  5. #5
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    2x+1
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  6. #6
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    It's actually \displaystyle 2(2x + 1).

    Now what cancels?
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  7. #7
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    the 2 and 2 to make 1(x+1)?
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  8. #8
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    dividing by fractions

    Hello Andyboy,
    Putting Provit post into math english .When you divide by a fraction you multiply by the inverse of that fraction.

    Example 1/2 divided by 3/4 = 1/2 times 4/3 = 4/6 = 2/3.
    In this problem do the same and simplify. You should arrive at the simple answer


    bjh
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  9. #9
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    Quote Originally Posted by bjhopper View Post
    Hello Andyboy,
    Putting Provit post into math english .When you divide by a fraction you multiply by the inverse of that fraction.

    Example 1/2 divided by 3/4 = 1/2 times 4/3 = 4/6 = 2/3.
    In this problem do the same and simplify. You should arrive at the simple answer


    bjh

    I understand now!
    Would I get 8x+4/8x+4
    therefore it would =1??
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  10. #10
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    exactly


    bjh
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