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

Toán Lớp 6: (x-51)=2×2^3+20 Giúp iem cho kẹo ????????

Toán Lớp 6: (x-51)=2×2^3+20
Giúp iem cho kẹo ????????

Comments ( 2 )

  1. x – 51 = 2 . 2^3 + 20
    ⇒ x – 51 = 2^4 + 20
    ⇒ x – 51 = 16 + 20
    ⇒ x – 51 = 36
    ⇒ x = 36 + 51
    ⇒ x = 87
    Vậy , x = 87 .

  2. Answer
    (x – 51) = 2 . 2^3 + 20
    => (x – 51) = 2^4 + 20
    => x – 51 = 16 + 20
    => x – 51 = 36
    => x = 36 + 51
    => x = 87
    Vậy x = 87

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