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

Toán Lớp 6: 720:[41-(2x-5)]=2³.5 80-(4.5²-3.2³)=2¹⁰-(x-4)

Toán Lớp 6: 720:[41-(2x-5)]=2³.5
80-(4.5²-3.2³)=2¹⁰-(x-4)

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
     $720:[41-(2x-5)]=2^3 .5$
    =>720:[41-(2x-5)]=8.5=40
    =>41-(2x-5)=720:40=18
    =>2x-5=41-18=23
    =>2x=23+5=28
    =>x=28:2=14
    80-(4 .5^2 -3.2^3)=2^10 -(x-4)
    =>80-(4. 25-3.8)=1024-(x-4)
    =>80-(100-24)=1024-(x-4)
    =>80-76=1024-(x-4)
    =>4=1024-(x-4)
    =>x-4=1024-4=1020
    =>x=1020+4=1024

  2. 720-[41-(2x-5)]=2^3.5
    720-[41-(2x-5)]=40
    41-(2x-5)=720:40
    41-(2x-5)=18
    2x-5=41-18
    2x-5=23
    2x=23+5=28
    x=28:2
    x=14
    _________________________________
    80-(4.5^2-3.2^3)=2^10-(x-4)
    80-(4.5^2-3.2^3)=1024-(x-=4)
    80-(4.5^2-3.2^3)=1024-(x-4)
    80-76=1024-(x-4)
    4=1024-(x-4)
    x-4=1024-4
    x-4=1020
    x=1020+4
    x=1024

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