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

Toán Lớp 6: A,11/12.x+3/4=-1/6 B,3-(1/6-x).2/3=2/3

Toán Lớp 6: A,11/12.x+3/4=-1/6 B,3-(1/6-x).2/3=2/3

Comments ( 2 )

  1. a,
    11/12 . x + 3/4 = (-1)/6
    => 11/12 x = (-1)/6 – 3/4
    => 11/12 x = -11/12
    => x = (-11)/12 : 11/12
    => x = -1
    Vậy x = -1
    b,
    3 – (1/6 – x) . 2/3 = 2/3
    => (1/6 – x) . 2/3 = 3 – 2/3
    => (1/6 – x) . 2/3 = 7/3
    => 1/6 – x = 7/3 : 2/3
    => 1/6 – x = 7/2
    => x = 1/6 – 7/2
    => x = (-10)/3
    Vậy x = (-10)/3

  2. Giải đáp:
    a, 11/12.x+3/4=-1/6
    <=>11/12.x=-1/6-3/4
    <=>11/12.x=-11/12
    <=>x=-11/12:11/12
    <=>x=-1
    Vậy x=-1
    b, 3-(1/6-x). 2/3=2/3
    <=>(1/6-x). 2/3=3-2/3
    <=>(1/6-x). 2/3=7/3
    <=>1/6-x=7/3:2/3
    <=>1/6-x=7/2
    <=>x=1/6-7/2
    <=>x=-10/3
    Vậy x=-10/3

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

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