Ответ:

  1. \(\frac{4}{8}=\frac{4:4}{8:4}=\frac{1}{2}\).
  2. \(\frac{6}{24}=\frac{6:6}{24:6}=\frac{1}{4}\).
  3. \(\frac{6}{40}=\frac{6:2}{40:2}=\frac{3}{20}\).
  4. \(\frac{32}{40}=\frac{32:8}{40:8}=\frac{4}{5}\).
  5. \(\frac{63}{84}=\frac{63:21}{84:21}=\frac{3}{4}\).
  6. \(\frac{48}{54}=\frac{48:6}{54:6}=\frac{8}{9}\).
  7. \(\frac{84}{156}=\frac{84:12}{156:12}=\frac{7}{13}\).
  8. \(\frac{320}{480}=\frac{320:160}{480:160}=\frac{2}{3}\).