Решим данное выражение по действиям:
- $$14\frac{5}{7} - 14 = \frac{103}{7} - 14 = \frac{103}{7} - \frac{14 \cdot 7}{7} = \frac{103}{7} - \frac{98}{7} = \frac{5}{7}$$
- $$30 - 29\frac{5}{7} = 30 - \frac{208}{7} = \frac{30 \cdot 7}{7} - \frac{208}{7} = \frac{210}{7} - \frac{208}{7} = \frac{2}{7}$$
- $$3\frac{1}{7} - \frac{22}{28} = \frac{22}{7} - \frac{22}{28} = \frac{22 \cdot 4}{7 \cdot 4} - \frac{22}{28} = \frac{88}{28} - \frac{22}{28} = \frac{66}{28} = \frac{33}{14} = 2\frac{5}{14}$$
- $$\frac{5}{7} + \frac{2}{7} + 2\frac{5}{14} = \frac{7}{7} + 2\frac{5}{14} = 1 + 2\frac{5}{14} = 3\frac{5}{14}$$
Ответ: $$3\frac{5}{14}$$