\[ -2\frac{2}{9} = -\frac{20}{9} \]
\[ -2\frac{1}{3} = -\frac{7}{3} \]
\[ 0.9 = \frac{9}{10} \]
\[ \frac{9}{10} \times \left(-\frac{7}{3}\right) = -\frac{9 \cdot 7}{10 \cdot 3} = -\frac{63}{30} = -\frac{21}{10} \]
\[ -\frac{20}{9} + \left(-\frac{21}{10}\right) = -\frac{20}{9} - \frac{21}{10} \]
\[ -\frac{20 \cdot 10}{90} - \frac{21 \cdot 9}{90} = -\frac{200}{90} - \frac{189}{90} = -\frac{389}{90} \]
Ответ: -\(\frac{389}{90}\)