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

Toán Lớp 5: tìm x : a, ( x – 1/2 ) × 5/3 =7/4 – 1/2 b, x – 16 ÷ 8 – 4 =5 3 phút

Toán Lớp 5: tìm x : a, ( x – 1/2 ) × 5/3 =7/4 – 1/2
b, x – 16 ÷ 8 – 4 =5
3 phút

Comments ( 2 )

  1.  Giải đáp+Lời giải và giải thích chi tiết:
     a) (x-1/2)×5/3=7/4-1/2
    <=>(x-1/2)×5/3=7/4-2/4
    <=>(x-1/2)×5/3=5/4
    <=>x-1/2=5/4÷5/3
    <=>x-1/2=5/4×3/5
    <=>x-1/2=3/4
    <=>x=3/4+1/2
    <=>x=3/4+2/4
    <=>x=5/4
     b) x-16÷8-4=5
    <=>x-2-4=5
    <=>x-6=5
    <=>x=5+6
    <=>x=11
      text{xin 5s ao và hay nhất nha}

  2. a) ( x – 1/2) xx 5/3= 7/4 – 1/2
    ( x – 1/2) xx 5/3= 7/4 – 2/4
    ( x – 1/2) xx 5/3 = 5/4
    ( x – 1/2) = 5/4 : 5/3
    x – 1/2 = 3/4
    x = 3/4 + 1/2
    x = 3/4 + 2/4
    x = 5/4
    Vậy x = 5/4
    b) x – 16 : 8 – 4 = 5
    x – 2 – 4 = 5
    x – 2 = 5 + 4
    x – 2 = 9
    x = 9 + 2
    x = 11
    Vậy x = 11
     

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

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