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

Toán Lớp 5: x chia 0,1 – x chia 4 – x nhân 3/4 = 2,25

Toán Lớp 5: x chia 0,1 – x chia 4 – x nhân 3/4 = 2,25

Comments ( 2 )

  1. Answer
    x : 0,1 – x : 4 – x xx 3/4 = 2,25
    x : 1/10 – x : 4 – x xx 3/4 = 9/4
    x xx 10 – x xx 1/4 – x xx 3/4 = 9/4
    x xx (10 – 1/4 – 3/4) = 9/4
    x xx (39/4 – 3/4) = 9/4
    x xx 9 = 9/4
    x = 9/4 : 9
    x = 9/4 xx 1/9
    x = 1/4
    $\text{Vậy}$ x = 1/4

  2. Lời giải và giải thích chi tiết:
    x : 0,1 – x : 4 – x xx 3/4 = 2,25
    x : 1/10 – x : 4 – x xx 3/4 = 9/4
    x xx 10 – x xx 1/4 – x xx 3/4 = 9/4
    x xx (10 – 1/4 – 3/4) = 9/4
    x xx 9 = 9/4
    x = 9/4 : 9
    x = 1/4
    Vậy  x = 1/4

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

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