tim y : y : 15 – 34,87 = 52,21 + 6 76,22 – y x 3 = 30,61 x 2 2. tinh thuan tien 60 – 26,75 – 13,25 38,25 –

tim y : y : 15 – 34,87 = 52,21 + 6
76,22 – y x 3 = 30,61 x 2
2. tinh thuan tien
60 – 26,75 – 13,25
38,25 – 18,25 + 21,64 – 11,64 + 9,93
45,28 + 52,17 – 15,28 – 12,43

1 bình luận về “tim y : y : 15 – 34,87 = 52,21 + 6 76,22 – y x 3 = 30,61 x 2 2. tinh thuan tien 60 – 26,75 – 13,25 38,25 –”

  1. B1:a)y:15-34,87=52,21+6
    Y:15-34,87=58,21
    Y:15=58,21+34,87=93,08
    Y=93,08×15=1396,2
    b)76,22-y x3=30,61×2
    76,22-y x3=61,22
    Y x3 =76,22-61,22=15
    Y=15:3=5
    B2:
    a)60-26,75-13,25=60-(26,75+13,25)
    60-40=20
    b)38,25-18,25+21,64-11,64+9,93
    =(38,25-18,25)+(21,64-11,64)+9,93
    =20+10+9,93=39,93
    c)45,28+52,17-15,28-12,43
    =(45,28-15,28)+(52,17-12,43)
    =30+39,74=69,74
    Xin ctlhn
    Chúc e hc tốt:>

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