Ответ:
\(7\frac{2}{3}=\frac{23}{3}\), \(3\frac{6}{8}=\frac{30}{8}=\frac{15}{4}\).
\(\frac{23}{3}\times\frac{15}{4}=\frac{115}{4}=28\frac{3}{4}\).
Ответ: \(28\frac{3}{4}\).
\(7\frac{2}{3}=\frac{23}{3}\), \(3\frac{6}{8}=\frac{30}{8}=\frac{15}{4}\).
\(\frac{23}{3}\times\frac{15}{4}=\frac{115}{4}=28\frac{3}{4}\).
Ответ: \(28\frac{3}{4}\).