Найдите значение выражения:
а) $7\frac{1}{3} + 5\frac{3}{5}$;
б) $6\frac{2}{3} - 1\frac{2}{5}$;
в) $3\frac{3}{4} + 4\frac{7}{9}$;
г) $20\frac{5}{6} - 2\frac{3}{4}$;
д) $39\frac{5}{9} - 4\frac{1}{6}$;
е) $11\frac{5}{8} + 8\frac{5}{6}$;
ж) $(\frac{2}{7} + 3\frac{1}{4}) - (\frac{11}{14} + \frac{13}{28})$;
з) $(8\frac{7}{12} - 2\frac{5}{8}) - (3\frac{7}{12} - 1\frac{1}{3})$.
$7\frac{1}{3} + 5\frac{3}{5} = 7\frac{5}{15} + 5\frac{9}{15} = 12\frac{14}{15}$
$6\frac{2}{3} - 1\frac{2}{5} = 6\frac{10}{15} - 1\frac{6}{15} = 5\frac{4}{15}$
$3\frac{3}{4} + 4\frac{7}{9} = 3\frac{27}{36} + 4\frac{28}{36} = 7\frac{55}{36} = 8\frac{19}{36}$
$20\frac{5}{6} - 2\frac{3}{4} = 20\frac{10}{12} - 2\frac{9}{12} = 18\frac{1}{12}$
$39\frac{5}{9} - 4\frac{1}{6} = 39\frac{10}{18} - 4\frac{3}{18} = 35\frac{7}{18}$
$11\frac{5}{8} + 8\frac{5}{6} = 11\frac{15}{24} + 8\frac{20}{24} = 19\frac{35}{24} = 20\frac{11}{24}$
$(\frac{2}{7} + 3\frac{1}{4}) - (\frac{11}{14} + \frac{13}{28}) = (\frac{8}{28} + 3\frac{7}{28}) - (\frac{22}{28} + \frac{13}{28}) = 3\frac{15}{28} - 1\frac{7}{28} = 2\frac{8}{28} = 2\frac{2}{7}$
$(8\frac{7}{12} - 2\frac{5}{8}) - (3\frac{7}{12} - 1\frac{1}{3}) = (8\frac{14}{24} - 2\frac{15}{24}) - (3\frac{7}{12} - 1\frac{4}{12}) = (7\frac{38}{24} - 2\frac{15}{24}) - 2\frac{3}{12} = 5\frac{23}{24} - 2\frac{3}{12} = $
Пожауйста, оцените решение