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

Toán Lớp 5: Tìm x a, mở ( x – 3,64 ) × 2,5 = 15,85 b, 52 x x = 3380

Toán Lớp 5: Tìm x
a, mở ( x – 3,64 ) × 2,5 = 15,85
b, 52 x x = 3380

Comments ( 2 )

  1. a, (x- 3,64 ) \times 2,5 = 15,85
    x – 3,64 = 15,85 : 2,5
    x – 3,64 = 6,34
    x = 6,34 + 3,64
    x = 9,98
    \text{Vậy x = 9,98}
    b, 52 \times x = 3380
    x = 3380 : 52
    x = 65
    \text{Vậy x= 65}

  2. a) (x – 3,64) xx 2,5 = 15,85
        (x – 3,64) = 15,85 : 2,5
        x – 3,64 = 6,34
        x = 6,34 + 3,64
        x = 9,98
    b) 52 xx x = 3380
        x = 3380 : 52 
        x = 64

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