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

Toán Lớp 6: 75 phần trăm +1,1: (2/5-3/2)-(1/3) ²

Toán Lớp 6: 75 phần trăm +1,1: (2/5-3/2)-(1/3) ²

Comments ( 2 )

  1. Giải đáp:
     75% + 1,1 : (2/5 – 3/2) – (1/3)^2
    = 75/100 + 11/10 : (4/10 – 15/10) – 1/9
    = 3/4 + 11/10 : (-11/10) – 1/9
    = 3/4 + 11/10 . (-10/11) – 1/9
    = 3/4 – 1 – 1/9
    = 27/36 – 36/36 – 4/36
    = (27 – 36 – 4)/36
    = -13/36

  2. Lời giải và giải thích chi tiết:
    75 % + 1,1 : ( 2/5 – 3/2 ) – ( 1/3 )^2
    = 75 % + 1,1 : ( 4/10 – 15/10 ) – ( 1/3 . 1/3 )
    = 75 % + 1,1 : -11/10 – 1/9
    = 3/4 + 11/10 : -11/10 – 1/9
    = 3/4 + 11/10 . -10/11 – 1/9
    = 3/4 + -1 – 1/9
    = 3/4 + -4/4 – 1/9
    = -1/4 – 1/9
    = -9/36 – 4/36
    = -13/36

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