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

Toán Lớp 5: Tìm x a) x + 6,9 = 65,2 – 38,49 b) x x 5 = 0,15 + 3,7

Toán Lớp 5: Tìm x
a) x + 6,9 = 65,2 – 38,49 b) x x 5 = 0,15 + 3,7

Comments ( 2 )

  1. $\text{a) x + 6,9 = 65,2 – 38,49}$
    $\text{x + 6,9 = 26,71}$
    $\text{x = 26,71 – 6,9}$
    $\text{x = 19,81}$
    $\text{Vậy x = 19,81}$
    $\text{X x 5 = 0,15 + 3,7}$
    $\text{X x 5 = 3,85}$
    $\text{X = 3,85 : 5}$
    $\text{X = 0,77}$
    $\text{Vậy x = 0,77}$

  2. a, x + 6,9 =65,2 – 38,49
     x + 6,9 =26,71
            x= 26,71 – 6,9
            x=19,81
    b, x × 5 = 0,15 + 3,7
        x × 5 = 3,85
                x= 3,85 : 5
                x=0,77

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