2) Сократите дроби: а) \(\frac{3x^2}{7x}\); б) \(\frac{8y^3}{15y^4}\); в) \(\frac{4z^2}{-8z^3}\); г) \(\frac{2a^5}{a^4}\); д) \(\frac{-14b^2}{21b^4}\); е) \(\frac{27c^6}{45c}\).

1. \(\frac{3x^2}{7x}=\frac{3x}{7}\).
2. \(\frac{8y^3}{15y^4}=\frac{8}{15y}\).
3. \(\frac{4z^2}{-8z^3}=-\frac{1}{2z}\).
4. \(\frac{2a^5}{a^4}=2a\).
5. \(\frac{-14b^2}{21b^4}=-\frac{2}{3b^2}\).
6. \(\frac{27c^6}{45c}=\frac{3c^5}{5}\).

Ответ: а) \(\frac{3x}{7}\); б) \(\frac{8}{15y}\); в) \(-\frac{1}{2z}\); г) \(2a\); д) \(-\frac{2}{3b^2}\); е) \(\frac{3c^5}{5}\).