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

Toán Lớp 9: X-4+2x+10 phần x+2 tính dùm mik vs

Toán Lớp 9: X-4+2x+10 phần x+2 tính dùm mik vs

Comments ( 2 )

  1. #andy
    \[\begin{array}{l}
    \dfrac{{x – 4 + 2x + 10}}{{x + 2}}\\
     = \dfrac{{3x + 6}}{{x + 2}}\\
     = \dfrac{{3\left( {x + 2} \right)}}{{x + 2}}\\
     = 3
    \end{array}\]

  2. (x-4+2x+10)/(x+2)
    =(3x+6)/(x+2)
    =(3(x+2))/(x+2)
    =3 
    – Đặt nhân tử chung 

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