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

Toán Lớp 6: Tìm x : `(17x – 25): 8 + 65 = 9^2`

Toán Lớp 6: Tìm x :
(17x – 25): 8 + 65 = 9^2

Comments ( 2 )

  1. $\text{(17x – 25) : 8 + 65 = 9²}$
    $\text{⇒ (17x – 25) : 8 + 65 = 81}$
    $\text{⇒ (17x – 25) : 8 = 81 – 65}$
    $\text{⇒ (17x – 25) : 8 = 16}$
    $\text{⇒ 17x – 25 = 16 × 8}$
    $\text{⇒ 17x – 25 = 128}$
    $\text{⇒ 17x = 128 + 25}$
    $\text{⇒ 17x = 153}$
    $\text{⇒ x = 153 : 17 }$
    $\text{⇒ x = 9}$
    $\text{Vậy x = 9}$
     

  2. Giải đáp+Lời giải và giải thích chi tiết:
    (17x-25):8+65=9^2
    (17x-25):8+65=81
    (17x-25):8=81-65
    (17x-25):8=16
    17x-25=16.8
    17x-25=128
    17x=128+25
    17x=153
    x=153:17
    x=9
    Vậy x=9

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

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