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13 August, 23:39

2/3 + (-5/7)

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Answers (2)
  1. 14 August, 00:01
    0
    -1/21

    Step-by-step explanation:

    2/3 + - 5/7

    Get a common denominator of 21

    2/3 * 7/7 = 14/21

    -5/7*3/3 = - 15/21

    14/21 - 15/21 = - 1/21
  2. 14 August, 00:02
    0
    -1/21

    Step-by-step explanation:

    2/3 + (-5/7)

    2/3 - 5/7

    Lcm: 21

    (2*7 - 5*3) / 21

    (14 - 15) / 21

    -1/21
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