Помоги мне вычислить примеры с дробями: 7 14/15 + 2 1/15

Конечно, давай решим эти примеры вместе! 1) $7 \frac{14}{15} + 2 \frac{1}{15} = (7 + 2) + (\frac{14}{15} + \frac{1}{15}) = 9 + \frac{15}{15} = 9 + 1 = 10$ 2) $9 \frac{24}{27} + 12 \frac{13}{27} = (9 + 12) + (\frac{24}{27} + \frac{13}{27}) = 21 + \frac{37}{27} = 21 + 1 \frac{10}{27} = 22 \frac{10}{27}$ 3) $1 - \frac{12}{19} = \frac{19}{19} - \frac{12}{19} = \frac{19 - 12}{19} = \frac{7}{19}$ 4) $8 - 3 \frac{6}{15} = 8 - 3 - \frac{6}{15} = 5 - \frac{6}{15} = 4 + 1 - \frac{6}{15} = 4 + \frac{15}{15} - \frac{6}{15} = 4 \frac{9}{15} = 4 \frac{3}{5}$ 5) $12 - 11 \frac{6}{11} = 12 - 11 - \frac{6}{11} = 1 - \frac{6}{11} = \frac{11}{11} - \frac{6}{11} = \frac{5}{11}$ 6) $16 \frac{3}{13} - 6 \frac{8}{13} = (16 - 6) + (\frac{3}{13} - \frac{8}{13}) = 10 - \frac{5}{13} = 9 + 1 - \frac{5}{13} = 9 + \frac{13}{13} - \frac{5}{13} = 9 \frac{8}{13}$ 7) $13 \frac{4}{9} - 2 \frac{8}{9} = (13 - 2) + (\frac{4}{9} - \frac{8}{9}) = 11 - \frac{4}{9} = 10 + 1 - \frac{4}{9} = 10 + \frac{9}{9} - \frac{4}{9} = 10 \frac{5}{9}$ 8) $10 \frac{7}{16} - 4 \frac{12}{16} = (10 - 4) + (\frac{7}{16} - \frac{12}{16}) = 6 - \frac{5}{16} = 5 + 1 - \frac{5}{16} = 5 + \frac{16}{16} - \frac{5}{16} = 5 \frac{11}{16}$ 9) $29 \frac{49}{53} - 8 \frac{49}{53} = (29 - 8) + (\frac{49}{53} - \frac{49}{53}) = 21 + 0 = 21$ 10) $(20 \frac{16}{25} + 13 \frac{9}{25}) - (23 \frac{4}{14} + 7 \frac{13}{14}) = (20 + 13) + (\frac{16}{25} + \frac{9}{25}) - ((23 + 7) + (\frac{4}{14} + \frac{13}{14})) = 33 + \frac{25}{25} - (30 + \frac{17}{14}) = 33 + 1 - 30 - \frac{17}{14} = 4 - \frac{17}{14} = 4 - 1 \frac{3}{14} = 3 - \frac{3}{14} = 2 + 1 - \frac{3}{14} = 2 + \frac{14}{14} - \frac{3}{14} = 2 \frac{11}{14}$