\(\frac{3}{\left(x+2\right).\left(x+5\right)}\)+\(\frac{5}{\left(x+5\right).\left(x+10\right)}\)+\(\frac{7}{\left(x+10\right).\left(x+5\right)}\)=\(\frac{x}{\left(x+2\right).\left(x+17\right)}\)\(\frac{x-1}{2009}\)+ \(\frac{x-2}{2008}\)=\(\frac{x-3}{2007}\) ...
Đọc tiếp
\(\frac{3}{\left(x+2\right).\left(x+5\right)}\)+\(\frac{5}{\left(x+5\right).\left(x+10\right)}\)+\(\frac{7}{\left(x+10\right).\left(x+5\right)}\)=\(\frac{x}{\left(x+2\right).\left(x+17\right)}\)
\(\frac{x-1}{2009}\)+ \(\frac{x-2}{2008}\)=\(\frac{x-3}{2007}\) + \(\frac{x-4}{2006}\)
