Реши примеры на сложение смешанных дробей.

a) $91\frac{1}{6} + 3\frac{5}{18} = 91\frac{3}{18} + 3\frac{5}{18} = (91 + 3) + (\frac{3}{18} + \frac{5}{18}) = 94 + \frac{8}{18} = 94 + \frac{4}{9} = 94\frac{4}{9}$ б) $1\frac{4}{15} + 2\frac{3}{20} = 1\frac{16}{60} + 2\frac{9}{60} = (1 + 2) + (\frac{16}{60} + \frac{9}{60}) = 3 + \frac{25}{60} = 3 + \frac{5}{12} = 3\frac{5}{12}$ в) $5\frac{1}{8} + 41\frac{7}{12} = 5\frac{3}{24} + 41\frac{14}{24} = (5 + 41) + (\frac{3}{24} + \frac{14}{24}) = 46 + \frac{17}{24} = 46\frac{17}{24}$ г) $39\frac{5}{6} + 12\frac{5}{9} = 39\frac{15}{18} + 12\frac{10}{18} = (39 + 12) + (\frac{15}{18} + \frac{10}{18}) = 51 + \frac{25}{18} = 51 + 1\frac{7}{18} = 52\frac{7}{18}$ д) $36\frac{5}{7} + 12\frac{7}{8} = 36\frac{40}{56} + 12\frac{49}{56} = (36 + 12) + (\frac{40}{56} + \frac{49}{56}) = 48 + \frac{89}{56} = 48 + 1\frac{33}{56} = 49\frac{33}{56}$ е) $5\frac{2}{3} + \frac{3}{4} = 5\frac{8}{12} + \frac{9}{12} = 5 + (\frac{8}{12} + \frac{9}{12}) = 5 + \frac{17}{12} = 5 + 1\frac{5}{12} = 6\frac{5}{12}$ ж) $4 + 3\frac{3}{7} = 7\frac{3}{7}$ з) $8\frac{7}{9} + 3 = 11\frac{7}{9}$