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

Toán Lớp 6: 12 . ( x – 1 ) : = 4³ + 2³ giúp em vs ạ

Toán Lớp 6: 12 . ( x – 1 ) : = 4³ + 2³
giúp em vs ạ

Comments ( 2 )

  1. ꧁????????????????????????????????➈➈➀➈➈➀????꧂
    12 . ( x – 1 )  = 4^3 + 2^3
    ⇔ 12 . ( x – 1 )  = 64 + 8
    ⇔ 12 . ( x – 1 )  = 72
    ⇔ x – 1 = 72 : 12
    ⇔ x – 1 = 6
    ⇔ x = 1 + 6
    ⇔ x = 7
             Vậy x = 7

  2. 12.(x-1)=4^3 + 2^3
    12.(x-1)=64+8
    12.(x-1)=72
    x-1=72:12
    x-1=6
    x-1=6
    x=6+1
    x=7
    Vậy x=7

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

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