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14 June, 18:58

D+d+d+d=120 what is d

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Answers (2)
  1. 14 June, 19:03
    0
    The answer to D should be 30.
  2. 14 June, 19:28
    0
    Remember you can do anything to an equation as long as you do it to both sides

    assumind D=d

    d+d+d+d=120

    4d=120

    divide both sides by 4

    4d/4=120/4

    d (4/4) = 30

    d (1) = 30

    d=30

    d=30
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