\(x-\frac{2}{5}+\frac{7}{12}=\frac{1}{2}.\frac{3}{4}.\frac{-9}{16}\Rightarrow x-\frac{2}{5}+\frac{7}{12}=-\frac{27}{128}\)
\(\Rightarrow x=-\frac{27}{128}-\frac{7}{12}+\frac{2}{5}\Rightarrow x=-\frac{757}{1920}\)
****
\(x-\frac{2}{5}+\frac{7}{12}=\frac{1}{2}.\frac{3}{4}.\frac{-9}{16}\)
\(x-\frac{2}{5}+\frac{7}{12}=\frac{-27}{128}\)
\(x=\frac{-27}{128}-\frac{7}{12}+\frac{2}{5}\)
\(x=-\frac{305}{384}+\frac{2}{5}\)
\(x=-\frac{757}{1920}\)