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

Toán Lớp 6: 108-4 x (3x + 5)= 8 Mũ 6 : 8 mũ 4

Toán Lớp 6: 108-4 x (3x + 5)= 8 Mũ 6 : 8 mũ 4

Comments ( 2 )

  1. 108-4 × (3x + 5)= 8 ^6 : 8 ^ 4
    <=>108-4 × (3x + 5)= 8^2=64
    <=>4 × (3x + 5)=108-64=44
    <=>3x+5=44:4=11
    <=>3x=11-5=6
    <=>x=6:3
    <=>x=2
    Vậy x=2

  2. Giải đáp:
     $108-4.(3x+5)=8^6:8^4$
    $⇔ 108-4.(3x+5)= 64$
    $⇔ 4.(3x+5)= 108-64$
    $⇔ 4.(3x+5)=44$
    $⇔ 3x+5=44:4$
    $⇔ 3x+5=11$
    $⇔ 3x=11-5$
    $⇔ 3x=6$
    $⇔ x=6:3$
    $⇔x=2$
    $\text{Vậy x=2}$
     

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