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

Toán Lớp 6: (x * 44 * 25 * 39) : (15*5*13)=240 tìm x

Toán Lớp 6: (x * 44 * 25 * 39) : (15*5*13)=240
tìm x

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
     (x*44*25*39):(15*5*13)=240
    ⇔(x*44*5*5*3*13):(3*5*5*13)=240
    ⇔x*44=240
    ⇔x=60/11

  2. C1:
    ( x . 44 . 25 . 39 ) : ( 15 . 5 . 13 ) = 240
    ( x . 11 . 4 . 25 . 39 ) / ( 15 . 5 . 13 ) = 240
    ( x . 11 . 4 . 5 . 3 ) / 15 = 240
    ( x . 44 . 15 ) / 15 = 240
    x. 44 = 240
    x = 240 : 44
    x=240/44
    x=60/11
    C2:
    (x . 44 . 25 . 39) : (15 . 5 . 13)=240
    (x. 44 . 5 . 5 . 3 . 13):(3 . 5 . 5 . 13)=240
    (x. 44 . 5 . 5 . 3 . 13)/(3 . 5 . 5 . 13)=240
    x.44=240
    x=240/44
    x=60/11
     

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