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19 October, 15:23

7/20 + (-11/12)

I I had 77/220 and that was wrong. I cant figure this out.

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Answers (2)
  1. 19 October, 16:05
    0
    7/20 + (-11/12) =

    7/20 - 11/12 =

    84/240 - 220/240 =

    -136/240 reduces to - 17/30
  2. 19 October, 17:11
    0
    The answer you put is wrong. It should be:

    -17/30
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