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

Toán Lớp 6: 2x – 49 = 5 . 3² Giúp mình với ạ

Toán Lớp 6: 2x – 49 = 5 . 3²
Giúp mình với ạ

Comments ( 2 )

  1. 2x – 49 = 5 . 3²
    <=>2x-49=5.9=45
    <=>2x=94
    <=>x=94:2
    <=>x=47
    Vậy x=47
     

  2. Giải đáp:
     $2x-49=5.3²$
    $⇔ 2x-49= 5.9$
    $⇔ 2x-49= 45$
    $⇔ 2x= 45+49$
    $⇔ 2x=94$
    $⇔ x= 94:2$
    $⇔ x= 47$
    $Vậy$ $x=47$
     

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