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I need help proving if a + a = 0 then a = 0

  1. Jul 13, 2004 #1
    I need help proving if a + a = 0 then a = 0. Thanks!
     
    Last edited: Jul 13, 2004
  2. jcsd
  3. Jul 13, 2004 #2

    mathman

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    Science Advisor

    Are you working with ordinary arithmetic, with ordinary (real or complex) numbers? If so then a+a=2a. Thus you have 2a=0. Divide both sides by 2 to get your answer.
     
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