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math

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ms.sue answer my questions 9 and 7/10 - 5 and 3/4

  • math -

    First, what is the common denominator for 7/10 and 3/4?

    After you post that answer, I'll help you from there.

  • math -

    29/20

  • math -

    Yes. 20 is the common denominator.

    7/10 = 14/20
    3/4 = 15/20

    You need to subtract 5 15/20 from 9 14/20.

    We need to make the top fraction larger. So we to subtract 1 from the whole number and add 20/20 to the fraction.

    9 14/20 = 8 34/20

    8 34/20 - 5 15/20 = 3 19/20

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