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13 August, 11:48

Mike sold half of his comic books and then bought 9 more. He now has 12. How many did he begin with?

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Answers (2)
  1. 13 August, 14:55
    0
    He began with 6 comic books
  2. 13 August, 15:19
    0
    You can make this an equation:

    (x/2) + 9=12 - - subtract 9 from both sides

    x/2=3 - - multiply by 2

    x=6

    He started with 6 comic books.
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