\(\left|\frac{-2}{3}x+\frac{3}{8}\right|\left(-\frac{8}{5}\right)=\frac{-8}{15}\)
\(\left|\frac{-2}{3}x+\frac{3}{8}\right|=\frac{-8}{15}:\frac{-8}{15}\)
\(\left|\frac{-2}{3}x+\frac{3}{8}\right|=1\)
\(\Rightarrow-\frac{2}{3}x+\frac{3}{8}\in\left\{1;-1\right\}\)
\(\Rightarrow-\frac{2}{3}x\in\left\{\frac{5}{8};\frac{-11}{8}\right\}\)
\(\Rightarrow x\in\left\{\frac{-15}{16};\frac{33}{16}\right\}\)