12 x ( x – 1) : 3 = 26 + 23

Question

12 x ( x – 1) : 3 = 26 + 23

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Verity 4 years 2020-10-15T11:35:52+00:00 2 Answers 98 views 0

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  1. Eirian
    0
    2020-10-15T11:37:05+00:00
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    $12.(x-1):3=26+23$

    $↔12.(x-1):3=49$

    $↔12.(x-1)=49.3=147$

    $↔x-1=\dfrac{147}{12}$

    $→x=\dfrac{147}{12}+1=\dfrac{53}{4}$

     

  2. Giakhanh
    0
    2020-10-15T11:37:08+00:00
    Reply

    `=> 12(x-1):3=49`

    `=> 12(x-1)=49.3=147`

    `=> x-1=147:12=12,25`

    `=> x=12,25+1=13,25`

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