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

Toán Lớp 5: Tìm x biết: x ÷ 1/2 + 2/7 = 5/7

Toán Lớp 5: Tìm x biết: x ÷ 1/2 + 2/7 = 5/7

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    x : 1/2 + 2/7 = 5/7
    x : 1/2 = 5/7 – 2/7 = 3/7
    x = 3/7 . 1/2 = 3/14
    Vậy  x = 3/14

  2. a. x : 1/2 + 2/7 = 5/7
    = x : 1/2 = 5/7 – 2/7
    = x : 1/2 = 3/7
    = x = 3/7 × 1/2
    = 3/14
    #Học tốt.

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

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