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Solve this Proof

  1. Sep 10, 2007 #1
    suppose a, b, c, and d are integers. prove that if a/c and c/d, then (ac/bd)
  2. jcsd
  3. Sep 10, 2007 #2
    Counterexample: a=c=d=2, b=1
  4. Sep 10, 2007 #3


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    At least, assuming that by a/c you mean that a divides c.
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