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17 August, 05:27

Add 3 7/12 + 2 7/9. Simplify the answer and write as a mixed number.

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Answers (2)
  1. 17 August, 06:50
    0
    Find lowest common denominator 9 * 12 = 108

    cross multiply 9 * 7 and 12 * 7

    3 63/108 + 2 84/108 = > 3 147/108 = > 4 39/108
  2. 17 August, 07:50
    0
    3 7/12 = 43/12

    2 7/9 = 25/9

    both denominators must be the same to add together.

    (25/9) x 12

    (43/12) x 9

    300/108 + 387/108 =

    687/108

    which in its simplest form is 229/36

    and in a mixed number is 6 13/36
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