2. Вычислите: a) \( 1\frac{3}{5} - 4\frac{2}{5} \cdot \frac{1}{4} \) b) \( 3\frac{2}{5} \cdot 1\frac{1}{7} + 3\frac{1}{2} \)

2. Вычислим:

1. а) \( 1\frac{3}{5} - 4\frac{2}{5} \cdot \frac{1}{4} = \frac{8}{5} - \frac{22}{5} \cdot \frac{1}{4} = \frac{8}{5} - \frac{22}{20} = \frac{8}{5} - \frac{11}{10} = \frac{16}{10} - \frac{11}{10} = \frac{5}{10} = \frac{1}{2} \)
2. б) \( 3\frac{2}{5} \cdot 1\frac{1}{7} + 3\frac{1}{2} = \frac{17}{5} \cdot \frac{8}{7} + \frac{7}{2} = \frac{17 \cdot 8}{5 \cdot 7} + \frac{7}{2} = \frac{136}{35} + \frac{7}{2} = \frac{136 \cdot 2 + 7 \cdot 35}{70} = \frac{272 + 245}{70} = \frac{517}{70} = 7\frac{27}{70} \)