4. Найдите разность (1 вариант)

a) \(1 - \frac{4}{9} = \frac{9}{9} - \frac{4}{9} = \frac{5}{9}\) б) \(12 - 1\frac{1}{4} = 12 - \frac{5}{4} = \frac{48}{4} - \frac{5}{4} = \frac{43}{4} = 10\frac{3}{4}\) в) \(\frac{11}{24} - \frac{1}{6} = \frac{11}{24} - \frac{4}{24} = \frac{7}{24}\) г) \(7\frac{3}{7} - 2\frac{5}{7} = 7 - 2 + \frac{3}{7} - \frac{5}{7} = 5 - \frac{2}{7} = 4\frac{5}{7}\)