Решаем уравнения, чтобы найти неизвестные переменные.
А) \(x - \frac{7}{9} = \frac{7}{12}\)
\(x = \frac{7}{9} + \frac{7}{12} = \frac{28}{36} + \frac{21}{36} = \frac{49}{36}\)
Б) \(\frac{11}{12} - y = \frac{7}{24}\)
\(y = \frac{11}{12} - \frac{7}{24} = \frac{22}{24} - \frac{7}{24} = \frac{15}{24} = \frac{5}{8}\)
В) \(y - \frac{4}{9} = \frac{11}{12}\)
\(y = \frac{4}{9} + \frac{11}{12} = \frac{16}{36} + \frac{33}{36} = \frac{49}{36}\)
Г) \(\frac{21}{24} - y = \frac{9}{48}\)
\(y = \frac{21}{24} - \frac{9}{48} = \frac{42}{48} - \frac{9}{48} = \frac{33}{48} = \frac{11}{16}\)