Ответ:
- \(7\frac{1}{4} \cdot 8 = \frac{29}{4} \cdot 8 = 58\).
- \(35\frac{2}{5} \cdot 5 = \frac{177}{5} \cdot 5 = 177\).
- \(5\frac{3}{7} : 2\frac{3}{8} = \frac{38}{7} : \frac{19}{8} = \frac{38}{7} \cdot \frac{8}{19} = \frac{16}{7} = 2\frac{2}{7}\).
- \(\frac{16}{25} : \frac{4}{15} = \frac{16}{25} \cdot \frac{15}{4} = \frac{12}{5} = 2\frac{2}{5}\).
Ответ: а) 58; б) 177; в) \(2\frac{2}{7}\); г) \(2\frac{2}{5}\).
