Ответ:
\(\frac{5}{7}=\frac{1}{7}+\frac{4}{7}\).
\(\frac{7}{8}=\frac{1}{8}+\frac{6}{8}\).
\(\frac{9}{10}=\frac{3}{10}+\frac{6}{10}\).
\(\frac{20}{100}=\frac{3}{100}+\frac{17}{100}\).
\(\frac{5}{7}=\frac{1}{7}+\frac{4}{7}\).
\(\frac{7}{8}=\frac{1}{8}+\frac{6}{8}\).
\(\frac{9}{10}=\frac{3}{10}+\frac{6}{10}\).
\(\frac{20}{100}=\frac{3}{100}+\frac{17}{100}\).