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

Toán Lớp 6: Giúp tôi với tìm x thỏa mãn (13x- 12 .12):2=19

Toán Lớp 6: Giúp tôi với
tìm x thỏa mãn
(13x- 12 .12):2=19

Comments ( 2 )

  1. $\text{(13x-12.12):2=19}$
    $\text{⇒13x-144=19×2}$
    $\text{⇒13x-144=38}$
    $\text{⇒13x=38+144}$
    $\text{⇒13x=182}$
    $\text{⇒x=182:13}$
    $\text{⇒x=14}$
    $\text{Vậy x=14}$

  2. $\text{( 13x – 12 . 12) : 2 = 19}$
    $\text{( 13x – 12 . 12) = 19 . 2}$
    $\text{ 13x – 12 . 12 = 38}$
    $\text{13x – 144 = 38}$
    $\text{13x = 38 + 144}$
    $\text{13x = 182}$
    $\text{x = 182 : 13}$
    $\text{x = 14}$

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

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