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48-сабақ

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  • 63-k=0
    k=63
  • (83-28)+35=
    90
  • 25+b=25
    b=0
  • a-17=37
    a=54
  • 2 м - ... дм
    20 дм
  • (66+29)-95=
    0
  • (67-49)-5=
    13
  • (32+47)-48=
    31
  • (19+16)-31=
    4
  • 42-(15+4)=
    23
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