Вопрос:

335. Найдите произведение: 1) \(\frac27\cdot\frac35\); 2) \(\frac34\cdot\frac56\); 3) \(\frac47\cdot\frac79\); 4) \(\frac{15}{16}\cdot\frac{48}{55}\).

Ответ:

  1. \(\frac27\cdot\frac35=\frac6{35}\).
  2. \(\frac34\cdot\frac56=\frac{15}{24}=\frac58\).
  3. \(\frac47\cdot\frac79=\frac4{9}\).
  4. \(\frac{15}{16}\cdot\frac{48}{55}=\frac{15\cdot3}{55}=\frac{45}{55}=\frac9{11}\).

Ответ: 1) \(\frac6{35}\); 2) \(\frac58\); 3) \(\frac49\); 4) \(\frac9{11}\).