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

Toán Lớp 5: X : 10 + x : 100 + x : 0,25 = 20,55 50/100- x = 0,05

Toán Lớp 5: X : 10 + x : 100 + x : 0,25 = 20,55
50/100- x = 0,05

Comments ( 2 )

  1. cho câu trả lời hay nhất nha 
     

    toan-lop-5-10-100-0-25-20-55-50-100-0-05

  2. x ÷ 10 + x ÷ 100 + x ÷ 0,25 = 20,55
    x × 0,1 + x × 0,01 + x 4 = 20,55
    x × ( 0,1 + 0,01 + 4 ) = 20,55
    x × 4,11 = 20,55
               x = 20,55 ÷ 4,11
               x = 5
    $\frac{50}{100}$ – x = 0,05
    0,5 – x = 0,05
            x = 0,5 – 0,05
            x = 0,45
    $\text{@dautay17747}$

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