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cong tru 2 ban tay kct

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  • 30+9-8+60+8
    99
  • 2+30+5+60-80
    17
  • 5+1-5+2+1
    4
  • 8-7+40+50+3
    99
  • 4+5-5-2+5
    7
  • 6+3+70+51-8
    20
  • 6-5+6-5+6
    8
  • 2+5-1+3-4
    5
  • 40+7+50-72-25
    0
  • 70+8-61-17+30
    30
  • 50+9-8+30+7
    88
  • 80-60+8-7+78
    99
  • 4+45-20-3+50
    75
  • 90+7-80+2+70
    89
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