2. Решите уравнение: A) \(x + \frac{5}{10} = \frac{7}{10}\) Б) \(x - \frac{6}{11} = \frac{7}{11}\) B) \(\frac{21}{33} - x = \frac{12}{33}\)

Решение:

1. A) \(x = \frac{7}{10} - \frac{5}{10} = \frac{7-5}{10} = \frac{2}{10} = \frac{1}{5}\)
2. Б) \(x = \frac{7}{11} + \frac{6}{11} = \frac{7+6}{11} = \frac{13}{11}\)
3. B) \(x = \frac{21}{33} - \frac{12}{33} = \frac{21-12}{33} = \frac{9}{33} = \frac{3}{11}\)

Ответ: A) \(x = \frac{1}{5}\), Б) \(x = \frac{13}{11}\), B) \(x = \frac{3}{11}\).