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March 27, 2017

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19 and 6/7 +12 and 2/3

  • math - ,

    19 and 6/7 +12 and 2/3

    When you add and subtract fractions, you must use the same common denominator.

    Since 21 is evenly divided by both 7 and 3, 21 is the common denominator.

    19 6/7 = 19 18/21
    12 2/3 = 12 14/21

    19 18/21 + 12 14/21 = 31 32/21 = 32 11/21

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