Вычисли

• \(-\frac{8}{21}\)
• \(-2\frac{3}{5} \)
• \(-2\frac{14}{15} \)
• \(5 \)
• \(3 \)
• \(-2\frac{3}{21} \)
• \(-2\frac{4}{5} \)
• \(-2\frac{7}{15} \)

1. \(\frac{2}{7} \cdot (-1\frac{1}{3})=\) [ ]
2. \(2\frac{3}{5}\cdot(-\frac{13}{15})\cdot\frac{15}{13}=\) [ ]
3. \(1\frac{7}{15}\cdot(-2)=\) [ ]
4. \((-1\frac{2}{13}):(-\frac{5}{13})\cdot 1\frac{2}{3}=\) [ ]