\(\frac{3}{8}\left(x-\frac{2}{3}\right)-\frac{2}{9}\left(3x-\frac{1}{2}\right)=\frac{-7}{36}\)
\(\Rightarrow\frac{3}{8}x-\frac{1}{4}-\frac{2}{3}x+\frac{1}{9}=\frac{-7}{36}\Rightarrow\frac{-7}{24}x-\frac{5}{36}=\frac{-7}{36}\)
\(\Rightarrow\frac{-7}{24}x=\frac{-1}{3}\Rightarrow x=\frac{8}{7}\)