2.264 Найдите произведение: a) \(\frac{2}{3}\) · \(\frac{5}{11}\); б) \(\frac{2}{9}\) · \(\frac{5}{11}\); в) \(\frac{7}{12}\) · \(\frac{5}{6}\); г) \(\frac{5}{7}\) · \(\frac{5}{6}\); д) \(\frac{1}{2}\) · \(\frac{5}{9}\); e) \(\frac{11}{12}\) · \(\frac{5}{11}\)

a) \(\frac{2}{3}\) · \(\frac{5}{11}\) = \(\frac{2 \cdot 5}{3 \cdot 11}\) = \(\frac{10}{33}\)

Ответ: \(\frac{10}{33}\)

б) \(\frac{2}{9}\) · \(\frac{5}{11}\) = \(\frac{2 \cdot 5}{9 \cdot 11}\) = \(\frac{10}{99}\)

Ответ: \(\frac{10}{99}\)

в) \(\frac{7}{12}\) · \(\frac{5}{6}\) = \(\frac{7 \cdot 5}{12 \cdot 6}\) = \(\frac{35}{72}\)

Ответ: \(\frac{35}{72}\)

г) \(\frac{5}{7}\) · \(\frac{5}{6}\) = \(\frac{5 \cdot 5}{7 \cdot 6}\) = \(\frac{25}{42}\)

Ответ: \(\frac{25}{42}\)

д) \(\frac{1}{2}\) · \(\frac{5}{9}\) = \(\frac{1 \cdot 5}{2 \cdot 9}\) = \(\frac{5}{18}\)

Ответ: \(\frac{5}{18}\)

e) \(\frac{11}{12}\) · \(\frac{5}{11}\) = \(\frac{11 \cdot 5}{12 \cdot 11}\) = \(\frac{5}{12}\)

Ответ: \(\frac{5}{12}\)