3. Найдите значение выражения \(\left(3-\frac{15}{28} \cdot 1\frac{1}{6}\right) \cdot 2\frac{2}{19}\).

1) \(1\frac{1}{6} = \frac{1 \cdot 6 + 1}{6} = \frac{7}{6}\)

2) \(\frac{15}{28} \cdot \frac{7}{6} = \frac{15 \cdot 7}{28 \cdot 6} = \frac{5 \cdot 1}{4 \cdot 2} = \frac{5}{8}\)

3) \(3 - \frac{5}{8} = \frac{3 \cdot 8 - 5}{8} = \frac{24 - 5}{8} = \frac{19}{8}\)

4) \(2\frac{2}{19} = \frac{2 \cdot 19 + 2}{19} = \frac{38 + 2}{19} = \frac{40}{19}\)

5) \(\frac{19}{8} \cdot \frac{40}{19} = \frac{19 \cdot 40}{8 \cdot 19} = \frac{1 \cdot 5}{1 \cdot 1} = 5\)

Ответ: 5