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simple addition

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  • 13 + 6 =
    19
  • 11 + 6 =
    17
  • 12 + 6 =
    18
  • 6+6 =
    12
  • 14 + 3 =
    17
  • 7+4 =
    11
  • 17 + 3 =
    20
  • 13 + 7 =
    20
  • 5 + 4 =
    9
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