Ответ:

  1. \(\frac{2}{8}=\frac{2\div2}{8\div2}=\frac14\).
  2. \(\frac{8}{40}=\frac{8\div8}{40\div8}=\frac15\).
  3. \(\frac{10}{12}=\frac{10\div2}{12\div2}=\frac56\).
  4. \(\frac{7}{28}=\frac{7\div7}{28\div7}=\frac14\).
  5. \(\frac{6}{12}=\frac{6\div6}{12\div6}=\frac12\).