Ответ:
- \(\frac{2}{15}+\frac{5}{15}=\frac{7}{15}\); \(\frac{15}{15}+\frac{5}{15}=\frac{20}{15}=1\frac{1}{3}\).
- \(\frac{26}{100}+\frac{28}{100}=\frac{54}{100}=\frac{27}{50}\).
- \(\frac{64}{207}+\frac{51}{207}=\frac{115}{207}\).
- \(\frac{38}{50}+\frac{16}{50}=\frac{54}{50}=1\frac{2}{25}\).
- \(\frac{85}{90}+\frac{2}{90}=\frac{87}{90}=\frac{29}{30}\).
- \(\frac{32}{165}+\frac{83}{165}=\frac{115}{165}=\frac{23}{33}\).
