Выполни действие: 13) 2 9/11 + 7 7/44 =

Давай решим эти примеры по порядку: 13) $2\frac{9}{11} + 7\frac{7}{44} = 2\frac{36}{44} + 7\frac{7}{44} = 9\frac{43}{44}$ 14) $14\frac{4}{21} - \frac{10}{21} = 13\frac{25}{21} - \frac{10}{21} = 13\frac{15}{21} = 13\frac{5}{7}$ 15) $\frac{3}{8} + 15 = 15\frac{3}{8}$ 16) $1 - \frac{8}{13} = \frac{13}{13} - \frac{8}{13} = \frac{5}{13}$ 17) $\frac{11}{70} + 2\frac{13}{90} = \frac{99}{630} + 2\frac{91}{630} = 2\frac{190}{630} = 2\frac{19}{63}$ 18) $6\frac{3}{19} - 4\frac{11}{38} = 6\frac{6}{38} - 4\frac{11}{38} = 5\frac{44}{38} - 4\frac{11}{38} = 1\frac{33}{38}$ 19) $\frac{47}{64} + \frac{15}{64} = \frac{62}{64} = \frac{31}{32}$ 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) $9\frac{9}{44} + 1\frac{3}{44} = 10\frac{12}{44} = 10\frac{3}{11}$