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12 February, 14:38

Show that (A - B) - C is not necessarily equal to A - (B - C).

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Answers (2)
  1. 12 February, 14:49
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    (3-2) - 1=0

    3 - (2-1) = 2

    Boom! Done
  2. 12 February, 14:49
    0
    (A-B) - C = A-B-C

    A - (B-C) = A-B+C

    You can see, 1rst & 2nd equations are not equal after simplification.
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