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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: b) (−43)+(−25)+(−32) d) 23−[(−74)−(12+38)] b) ????−25=57 d) 47−????=13

Toán Lớp 7: b) (−43)+(−25)+(−32)
d) 23−[(−74)−(12+38)]
b) ????−25=57
d) 47−????=13

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
     b)(-43)+(-25)+(-32)
    =-43-25-32
    =-100
    c)23-[(-74)-(12+38)]
    =23-(-74-50)
    =23+124
    =147
    b)x-25=57
    =>x=57+25
    =>x=82
    c)47-x=13
    =>x=47-13
    =>x=34

  2. b) (−43)+(−25)+(−32)
    = – 100
    c23−[(−74)−(12+38)]
    = 23 -124
    = – 101
    b) ????−25=57
      x = 57 + 25
      x = 82
    d 47−????=13
        x = 47 – 13
      x  = 34

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222-9+11+12:2*14+14 = ? ( )