\(2017:\chi-\frac{2016}{\chi}=\frac{1}{2018}\)
\(\Rightarrow\frac{2017-2016}{\chi}=\frac{1}{2018}\)
\(\Rightarrow\frac{1}{\chi}=\frac{1}{2018}\)
\(\Rightarrow\chi=2018\)
HTDT
\(\Rightarrow\frac{2017}{x}-\frac{2016}{x}=\frac{1}{2018}\)
\(\Rightarrow\frac{2017-2016}{x}=\frac{1}{2018}\)
\(\Rightarrow\frac{1}{x}=\frac{1}{2018}\)\(\Rightarrow x=2018\)