12 x ( x – 1) : 3 = 26 + 23

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12 x ( x – 1) : 3 = 26 + 23

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Verity 8 tháng 2020-10-15T11:35:52+00:00 2 Answers 84 views 0

Answers ( )

  1. $12.(x-1):3=26+23$

    $↔12.(x-1):3=49$

    $↔12.(x-1)=49.3=147$

    $↔x-1=\dfrac{147}{12}$

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

     

  2. `=> 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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