a) Решим пример: ($$\frac{14}{48} + \frac{23}{48}$$) - $$\frac{25}{48}$$
1) $$\frac{14}{48} + \frac{23}{48} = \frac{14+23}{48} = \frac{37}{48}$$
2) $$\frac{37}{48} - \frac{25}{48} = \frac{37-25}{48} = \frac{12}{48}$$
3) Сократим дробь: $$\frac{12}{48} = \frac{1}{4}$$
б) Решим пример: $$\frac{58}{94} - (\frac{41}{94} + \frac{9}{94} - \frac{37}{94}) + \frac{49}{94}$$
1) $$\frac{41}{94} + \frac{9}{94} = \frac{41+9}{94} = \frac{50}{94}$$
2) $$\frac{50}{94} - \frac{37}{94} = \frac{50-37}{94} = \frac{13}{94}$$
3) $$\frac{58}{94} - \frac{13}{94} = \frac{58-13}{94} = \frac{45}{94}$$
4) $$\frac{45}{94} + \frac{49}{94} = \frac{45+49}{94} = \frac{94}{94} = 1$$
Ответ: а) $$\frac{1}{4}$$; б) 1