\(\left(\frac{-2}{3}\right).0,75+\frac{5}{3}:\left(\frac{-4}{9}\right)+\left(\frac{-1}{2}\right)^2\)
\(=\left(\frac{-2}{3}\right).\frac{3}{4}+\frac{5}{3}.\left(-\frac{9}{4}\right)+\frac{1}{4}\)
\(=\frac{-1}{2}+\frac{-15}{4}+\frac{1}{4}\)
\(=\frac{-2-15+1}{4}=\frac{-16}{4}=-4\)