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