Ответ:

  1. \(\frac{1}{25}+\frac{15}{4}=\frac{4+375}{100}=\frac{379}{100}=3.79\).
  2. \(\frac{9}{4}+\frac{8}{5}=\frac{45+32}{20}=\frac{77}{20}=3.85\).
  3. \(\frac{2}{25}+\frac{1}{4}=\frac{8+25}{100}=\frac{33}{100}=0.33\).
  4. \(\frac{14}{25}+\frac{3}{2}=\frac{28+75}{50}=\frac{103}{50}=2.06\).
  5. \(\frac{3}{2}-\frac{9}{5}=\frac{15-18}{10}=-\frac{3}{10}=-0.3\).
  6. \(\frac{19}{2}-\frac{7}{25}=\frac{475-14}{50}=\frac{461}{50}=9.22\).