38. (7/8−2 3/20):1/48

\(\frac{7}{8}-2\frac{3}{20}=\frac{35}{40}-\frac{88}{40}=-\frac{53}{40}\).

\(-\frac{53}{40}:\frac{1}{48}=-\frac{53}{40}\cdot48=-\frac{318}{5}=-63\frac{3}{5}\).

Ответ: −63\(\frac{3}{5}\)