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

Toán Lớp 8: $tính giá trị biểu thức sau,biết abc=2016$ P=$\frac{2bc-2016}{3c-2ab+2016}$-$\frac{2b}{3-2b+ab}$+$\frac{4032-3ac}{3ac-4032+2016a}$

Toán Lớp 8: $tính giá trị biểu thức sau,biết abc=2016$
P=$\frac{2bc-2016}{3c-2ab+2016}$-$\frac{2b}{3-2b+ab}$+$\frac{4032-3ac}{3ac-4032+2016a}$

Comments ( 1 )

  1. $\textit{Rút gọn biểu thức}$
    +)$\frac{2bc-2016}{3c-2bc+2016}$ = -1+$\frac{3c}{3c-2bc+2016}$ 
    +) $\frac{-2b}{3-2b+ab}$=$\frac{-2bc}{3c-2bc+2016}$ 
    +) $\frac{4032-3ac}{3ac-4032+2016a}$ = -1+$\frac{2016a}{3ac-2abc+2016a}$ 
    = -1+$\frac{2016}{3c-2bc+2016}$ 
    $\textit{Nelen}$
     

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

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