№1. Выполните вычитание: $$8 - \frac{2}{9} = ?$$ $$6 - \frac{3}{8} = ?$$ $$8 - \frac{4}{11} = ?$$

**Решение:** 1. $$8 - \frac{2}{9} = \frac{8 \cdot 9}{9} - \frac{2}{9} = \frac{72}{9} - \frac{2}{9} = \frac{72 - 2}{9} = \frac{70}{9} = 7\frac{7}{9}$$ 2. $$6 - \frac{3}{8} = \frac{6 \cdot 8}{8} - \frac{3}{8} = \frac{48}{8} - \frac{3}{8} = \frac{48 - 3}{8} = \frac{45}{8} = 5\frac{5}{8}$$ 3. $$4 - \frac{10}{11} = \frac{4 \cdot 11}{11} - \frac{10}{11} = \frac{44}{11} - \frac{10}{11} = \frac{44 - 10}{11} = \frac{34}{11} = 3\frac{1}{11}$$