N
nhungle201
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
giải các pt sau :
[tex]\frac{1}{2(x+1)}[/text] + [tex]\frac{1}{x+2}[/text] = [tex]\frac{3}{x+3}[/text] rút gọn biểu thức A= ( [tex]\frac{x^2-1}{x^2-9}[/text] - [tex]\frac{x}{x+3}[/text] + [tex]\frac{2}{x-3}[/text] ) : ( 2 - [tex]\frac{x+5}{3+x}[/text] )[/tex]
[tex]\frac{1}{2(x+1)}[/text] + [tex]\frac{1}{x+2}[/text] = [tex]\frac{3}{x+3}[/text] rút gọn biểu thức A= ( [tex]\frac{x^2-1}{x^2-9}[/text] - [tex]\frac{x}{x+3}[/text] + [tex]\frac{2}{x-3}[/text] ) : ( 2 - [tex]\frac{x+5}{3+x}[/text] )[/tex]
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