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What's the sum?

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  • 2+2=
    4
  • 7+6=
    13
  • 4-1=
    3
  • 5+4=
    9
  • 9-6=
    3
  • 2+9=
    11
  • 14-3=
    11
  • 5+5=
    10
  • 11+8=
    19
  • 9+6=
    15
  • 2+6=
    8
  • 4+7=
    11
  • 11-5=
    6
  • 3+2=
    5
  • 7-6=
    1
  • 3+4=
    7
  • 12+5=
    17
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