Решение:
\[ -0.77 \cdot \frac{4}{9} - \frac{4}{9} \cdot 2.83 = -\frac{4}{9} \cdot (0.77 + 2.83) \]
\[ 0.77 + 2.83 = 3.6 \]
\[ -\frac{4}{9} \cdot 3.6 = -\frac{4}{9} \cdot \frac{36}{10} \]
\[ -\frac{4}{9} \cdot \frac{36}{10} = -\frac{4 \times 36}{9 \times 10} = -\frac{4 \times 4}{1 \times 10} = -\frac{16}{10} \]
\[ -\frac{16}{10} = -1.6 \]
Ответ: -1.6