-m-3/3-3-m/9>2m-6/4+13求解

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-m-3/3-3-m/9>2m-6/4+13求解-m-3/3-3-m/9>2m-6/4+13求解-m-3/3-3-m/9>2m-6/4+13求解请问“-m-3/3”中的-m-3要打括号吗?4/(m-3

-m-3/3-3-m/9>2m-6/4+13求解
-m-3/3-3-m/9>2m-6/4+13求解

-m-3/3-3-m/9>2m-6/4+13求解
请问“-m-3/3”中的-m-3要打括号吗?

4/(m-3)-(2m-6)/(m^2-6m+9) =4/(m-3)-2(m-3)/(m-3)^2 =4/(m-3)-2/(m-3) =2/(m-3) m=7 原式=2/(7-3)=2/4=1/2

4/(m-3)-(2m-6)/(m^2-6m+9) =4/(m-3)-2(m-3)/(m-3)^2 =4/(m-3)-2/(m-3) =2/(m-3) m=7 原式=2/(7-3)=2/4=1/2