2. Найдите значение выражения: 1) 3 1/2 + (−2 1/3); 2) −4 2/5 − (−1 1/5); 3) 5 3/4 − (−2 1/2); 4) (−6 1/3) + (−3 1/6).

1. \(3\frac{1}{2}+\left(-2\frac{1}{3}\right)=\frac{7}{2}-\frac{7}{3}=\frac{21-14}{6}=\frac{7}{6}=1\frac{1}{6}\).
2. \(-4\frac{2}{5}-\left(-1\frac{1}{5}\right)=-\frac{22}{5}+\frac{6}{5}=-\frac{16}{5}=-3\frac{1}{5}\).
3. \(5\frac{3}{4}-\left(-2\frac{1}{2}\right)=\frac{23}{4}+\frac{10}{4}=\frac{33}{4}=8\frac{1}{4}\).
4. \(\left(-6\frac{1}{3}\right)+\left(-3\frac{1}{6}\right)=-\frac{19}{3}-\frac{19}{6}=-\frac{38}{6}-\frac{19}{6}=-\frac{57}{6}=-\frac{19}{2}=-9\frac{1}{2}\).

Ответ: 1) \(1\frac{1}{6}\); 2) \(-3\frac{1}{5}\); 3) \(8\frac{1}{4}\); 4) \(-9\frac{1}{2}\).