Решить примеры с дробями №16-24

**Ответ:** 16) $5/13$ 17) $2/9$ 18) $6 22/38 = 6 11/19$ 19) $1/2$ 20) $5 101/114$ 21) $3 4/5$ 22) $29/36$ 23) $9 11/24$ 24) $9 5/22$ **Решение:** 16) $1 - \frac{8}{13} = \frac{13}{13} - \frac{8}{13} = \frac{5}{13}$ 17) $\frac{11}{70} + 2 \frac{13}{90} = \frac{11 \cdot 9}{630} + \frac{193 \cdot 7}{630} = \frac{99 + 1351}{630} = \frac{1450}{630} = 2 \frac{190}{630} = 2 \frac{19}{63} = \frac{11}{70} + \frac{13}{90}$ (уточнение: если в условии $2 \frac{13}{90}$). Если пример $\frac{11}{70} + \frac{13}{90}$, то: $\frac{99}{630} + \frac{91}{630} = \frac{190}{630} = \frac{19}{63}$. 18) $6 \frac{3}{19} - \frac{4}{38} = 6 \frac{6}{38} - \frac{4}{38} = 6 \frac{2}{38} = 6 \frac{1}{19}$ 19) $\frac{47}{64} - \frac{15}{64} = \frac{32}{64} = \frac{1}{2}$ 20) $15 \frac{13}{38} - 9 \frac{16}{57} = 15 \frac{39}{114} - 9 \frac{32}{114} = 6 \frac{7}{114}$ 21) $3 \frac{7}{10} + \frac{1}{10} = 3 \frac{8}{10} = 3 \frac{4}{5}$ 22) $1 - \frac{7}{36} = \frac{36}{36} - \frac{7}{36} = \frac{29}{36}$ 23) $21 \frac{5}{12} - 11 \frac{7}{8} = 21 \frac{10}{24} - 11 \frac{21}{24} = 20 \frac{34}{24} - 11 \frac{21}{24} = 9 \frac{13}{24}$ 24) $9 \frac{9}{44} + 1 \frac{3}{44} = 10 \frac{12}{44} = 10 \frac{3}{11}$