47-[(45×24-5^2×12):14

Question

47-[(45×24-5^2×12):14

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Gerda 4 years 2020-11-26T22:48:13+00:00 2 Answers 71 views 0

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  1. Neala
    0
    2020-11-26T22:49:18+00:00
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    Đáp án:

     47 – [(45 . 24 – 5^2 . 12) : 14]

    = 47 – [( 1080 – 25 . 12) : 14]

    = 47 – [(1080 – 300) : 14]

    = 47 – [ 780 : 14 ]

    = 47 – 390/7

    = 329/7 – 390/7

    = -61/7

      Hok tốt!

     Cho mik xin câu trả lời hay nhất nhé!

     #Tolatam

     #Tamthatthat

    ~Thanks~

  2. Bo
    0
    2020-11-26T22:49:19+00:00
    Reply

    Đáp án:

     47-[(45×24-5^2×12):14

    =47-[(45×24)-(25×12):14

    47-[(1080-300):14

    =47-780:14

    =47-55,7

    =-8,7

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )