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

Toán Lớp 5: Câu 53: Tìm x biết: 9/6×(x-5/3)+3/2×5/3=3 a/ x = 4/3 b/ x = 2 c/ x = 1/2 d/ x = 2/3 Câu 54: Tìm x biết: 8/12×(x-3/8)+2/3×3/8=1 a/ x

Toán Lớp 5: Câu 53: Tìm x biết: 9/6×(x-5/3)+3/2×5/3=3
a/ x = 4/3 b/ x = 2 c/ x = 1/2 d/ x = 2/3
Câu 54: Tìm x biết: 8/12×(x-3/8)+2/3×3/8=1
a/ x = 4/3 b/ x = 2 c/ x = 1/2 d/ x = 3/2

Comments ( 1 )

  1. Câu 53: Tìm x biết: 9/6×(x-5/3)+3/2×5/3=3
    9/6x(x-5/3)+5/2=3
    9/6x(x-5/3)=3-5/2
    9/6x(x-5/3)=1/2
    x-5/3=1/2:9/6
    x-5/3=1/3
    x        =1/3+5/3
    x          =6/3=2
    Chọn B nhé.
    Câu 54: Tìm x biết: 8/12×(x-3/8)+2/3×3/8=1
    8/12x(x-3/8)+1/4=1
    8/12x(x-3/8)=1-1/4
    2/3x(x-3/8)=3/4
    x-3/8=3/4:2/3
    x-3/8=9/8
    x=9/8+3/8
    x=12/8=3/2
    Chọn D nhé.
    Xin hay nhất và 5 sao ạ

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

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