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

Toán Lớp 7: tìm x ( x – 2/3 ) : 1/3 + 5/6 = 9 5/6

Toán Lớp 7: tìm x ( x – 2/3 ) : 1/3 + 5/6 = 9 5/6

Comments ( 2 )

  1. x cần tìm là:
    ( x – 2/3 ) : 1/3 + 5/6 = 9 5/6
    ( x – 2/3 ) : 1/3 + 5/6 = 59/6
    ( x – 2/3 ) : 1/3 = 59/6 – 5/6
    ( x – 2/3 ) : 1/3 = 9
    x- 2/3 = 9 . 1/3
    x- 2/3 = 3
    x=3+ 2/3
    x=9/3 + 2/3
    x=11/3
    Vậy x=11/3

  2. Giải đáp: + Lời giải và giải thích chi tiết:
    (x-2/3) : 1/3 + 5/6 = 9 5/6
    ⇔ (x-2/3) : 1/3 = 9 + (5/6 – 5/6)
    ⇔ (x-2/3) : 1/3 = 9
    ⇔ x – 2/3 = 9. 1/3
    ⇔ x – 2/3 = 3
    ⇔ x = {9}/3 + 2/3
    ⇔ x = {11}/3
       Vậy x={11}/3.

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

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