Сократите дробь:
\(\vphantom{\frac{0^0}{0}}1)\ \frac{3m-3n}{7m-7n};\)
\(\vphantom{\frac{0^0}{0}}2)\ \frac{5a+25b}{2a^2+10ab};\)
\(\vphantom{\frac{0^0}{0}}3)\ \frac{4x-16y}{16y};\)
\(4)\ \frac{x^2-49}{6x+42};\)
\(5)\ \frac{12a^2-6a}{3-6a};\)
\(6)\ \frac{9b^2-1}{9b^2+6b+1};\)
\(7)\ \frac{b^5-b^4}{b^5-b^6};\)
\(8)\ \frac{7m^2+7m+7}{m^3-1};\)
\(9)\ \frac{64-x^2}{3x^2-24x}.\)