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

Toán Lớp 6: 3/2 – 4( 1/4 -x ) = 2/3 -7x mình quên cách tìm x :v

Toán Lớp 6: 3/2 – 4( 1/4 -x ) = 2/3 -7x
mình quên cách tìm x :v

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    \frac{3}{2} – 4(\frac{1}{4} – x) = \frac{2}{3} – 7x
    \frac{3}{2} – 1 + 4x = \frac{2}{3} – 7x
    4x + 7x = \frac{2}{3}  – \frac{3}{2} + 1
    11x = \frac{1}{6}
    x = \frac{1}{66}
    vậy x = \frac{1}{66}

  2. 3/2 – 4 ( 1/4 – x) = 2/3 – 7x
    3/2 – 4 . 1/4 + 4 . x = 2/3 – 7x
    3/2 – 1 + 4x + 7x = 2/3
    1/2 + ( 4 + 7) x = 2/3
    ( 4 + 7) x = 2/3 – 1/2
    11x = 1/6
    x = 1/6 : 11
    x= 1/66
    Vậy x = 1/66

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