Tính
----- Nội dung dịch tự động từ ảnh -----
c) \( \frac{4}{15} \left( \frac{2}{5} \right) + \frac{4}{15} \left( \frac{3}{10} \right); \)
d) \( \left( \frac{2}{15} \cdot \frac{9}{17} \cdot \frac{3}{32} \right) \left( \frac{-3}{17} \right); \)
e) \( (-1)^3 \cdot \frac{1}{15} \left( \frac{2^2}{3} \cdot \frac{2}{3} \cdot \frac{5}{6} \right); \)
f) \( \left( \frac{3}{7} \right)^0 \cdot \frac{1}{3} \cdot \frac{7}{9} \left( \frac{2^2}{5} \right) - 4. \)
c) \( \frac{4}{15} \left( \frac{2}{5} \right) + \frac{4}{15} \left( \frac{3}{10} \right); \)
d) \( \left( \frac{2}{15} \cdot \frac{9}{17} \cdot \frac{3}{32} \right) \left( \frac{-3}{17} \right); \)
e) \( (-1)^3 \cdot \frac{1}{15} \left( \frac{2^2}{3} \cdot \frac{2}{3} \cdot \frac{5}{6} \right); \)
f) \( \left( \frac{3}{7} \right)^0 \cdot \frac{1}{3} \cdot \frac{7}{9} \left( \frac{2^2}{5} \right) - 4. \)