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

Toán Lớp 5: Tìm x biết: 56x + 44x – 10x = 100

Toán Lớp 5: Tìm x biết:
56x + 44x – 10x = 100

Comments ( 2 )

  1. 56x + 44x – 10x = 100
    ⇔ (56 + 44 – 10)x = 100
    ⇔ 90x = 100
    ⇔ x = 10/9

  2. $\text{ 56x + 44x – 10x = 100 }$
    $\text{ x ×( 56 + 44 – 10 ) = 100 }$
    $\text{ x× 90 = 100 }$
    $\text{ x = 100 : 90 }$
    $\text{ x = $\dfrac{10}{9}$ }$
     

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