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

Toán Lớp 7: (-0,5-4/5):3+13/30+(-1/6):(-2) Helps

Toán Lớp 7: (-0,5-4/5):3+13/30+(-1/6):(-2)
Helps

Comments ( 2 )

  1. Answer
    (-0,5 – 4/5) : 3 + 13/30 + (-1/6) : (-2)
    = (-1/2 – 4/5) : 3 + 13/30 – 1/6 : (-2)
    = -13/10 : 3 + 13/30 -1/6 . {-1}/2
    = -13/10 . 1/3 + 13/30 + 1/12
    = -13/30 + 13/30 + 1/12
    = 0 + 1/12
    = 1/12

  2. Giải đáp + Lời giải và giải thích chi tiết:
    (-0,5 – 4/5) : 3 + 13/30 + (-1/6) : (-2)
    = (-1/2 – 4/5) : 3 + 13/30 + 1/12
    = -13/10 : 3 + 13/30 + 1/12
    = -13/30 + 13/30 + 1/12
    = 0 + 1/12
    = 1/12

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