1. Выполните сложение: a) \frac{4}{19}+\frac{5}{19}; б) \frac{7}{30}+\frac{3}{30}; в) \frac{27}{200}+\frac{23}{200}

Решение:

1. \(\frac{4}{19}+\frac{5}{19} = \frac{4+5}{19} = \frac{9}{19}\)
2. \(\frac{7}{30}+\frac{3}{30} = \frac{7+3}{30} = \frac{10}{30} = \frac{1}{3}\)
3. \(\frac{27}{200}+\frac{23}{200} = \frac{27+23}{200} = \frac{50}{200} = \frac{1}{4}\)

Ответ: а) \(\frac{9}{19}\); б) \(\frac{1}{3}\); в) \(\frac{1}{4}\)