37) \(\frac{40}{100}-\frac{1}{8}\)

\(\frac{40}{100}=\frac{2}{5}=\frac{16}{40}\), а \(\frac{1}{8}=\frac{5}{40}\).

\(\frac{16}{40}-\frac{5}{40}=\frac{11}{40}\).

Ответ: \(\frac{11}{40}\)