1 1 X)3 5 2 1 3 2 2 1 Ъ) +

Х)

$$\frac{3}{2} - \frac{5}{1} = \frac{3}{2} - \frac{5 \cdot 2}{1 \cdot 2} = \frac{3}{2} - \frac{10}{2} = \frac{3-10}{2} = \frac{-7}{2} = -3 \frac{1}{2}$$

Ъ)

$$\frac{2}{3} + \frac{1}{6} = \frac{2 \cdot 2}{3 \cdot 2} + \frac{1}{6} = \frac{4}{6} + \frac{1}{6} = \frac{4+1}{6} = \frac{5}{6}$$

Ответ:

Х) $$-3 \frac{1}{2}$$; Ъ) $$\frac{5}{6}$$