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บวกลบจินตคณิต 1

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  • 6+2-2
    6
  • 1+1+1-3
    0
  • 3+1-2+5
    7
  • 2+2-2
    2
  • 7-5-2
    0
  • 9-5+5
    9
  • 1+2+1
    4
  • 9-8+5
    6
  • 9-4+1
    6
  • 1+7-3
    5
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