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

Toán Lớp 4: Bài 11: Tìm y : y × 2 + y × 3 + y × 4 = 45

Toán Lớp 4: Bài 11: Tìm y :
y × 2 + y × 3 + y × 4 = 45

Comments ( 2 )

  1. y × 2 + y × 3 + y × 4 = 45
    y × ( 2 + 3 + 4 ) = 45
    y × 9 = 45
    y = 45 : 9
    y = 5

  2. $\text{Bài 11: Tìm y :}$
        $\text{y × 2 + y × 3 + y × 4 = 45}$
    $\text{⇔ y × ( 2 + 3 + 4 ) = 45}$
    $\text{⇔ y × 9 = 45}$
    $\text{⇔ y = 45 : 9}$
    $\text{⇔ y = 5}$
    $\text{*Hok tốt!}$
    color{teal}{\text{@chedinhquang09 – #Hoidap247}}

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

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