Algebra 1

How do you find a common denominator when subtracting whole numbers and fractions?

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asked by Ashley
  1. Find the common denominator for the fractions.

    Example:

    2 3/4 - 1 2/5

    The common denominator is 20.

    2 3/4 = 11/4 = 55/20

    1 2/5 = 7/5 = 28/20

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    posted by Ms. Sue
  2. Thank you sooo much for your help now it all makes sence!!!! ;))

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    posted by Ashley
  3. Please explain how i would do this.
    8 1/9 - 1 6/7 =?

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    posted by Ashley

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