662. Կատարե՛ք գումարում.

ա) $14 \frac{3}{7} + 5 \frac{1}{3} = 14 \frac{9}{21} + 5 \frac{7}{21} = 19 \frac{16}{21}$ բ) $2 \frac{1}{3} + 1 \frac{2}{5} = 2 \frac{5}{15} + 1 \frac{6}{15} = 3 \frac{11}{15}$ գ) $4 \frac{7}{12} + 3 \frac{2}{7} = 4 \frac{49}{84} + 3 \frac{24}{84} = 7 \frac{73}{84}$ դ) $9 \frac{4}{7} + 2 \frac{1}{6} = 9 \frac{24}{42} + 2 \frac{7}{42} = 11 \frac{31}{42}$ ե) $8 \frac{2}{15} + 14 \frac{1}{4} = 8 \frac{8}{60} + 14 \frac{15}{60} = 22 \frac{23}{60}$ զ) $2 \frac{12}{35} + 1 \frac{1}{7} = 2 \frac{12}{35} + 1 \frac{5}{35} = 3 \frac{17}{35}$ է) $21 \frac{4}{5} + 2 \frac{2}{11} = 21 \frac{44}{55} + 2 \frac{10}{55} = 23 \frac{54}{55}$ ը) $1 \frac{7}{16} + 3 \frac{5}{12} = 1 \frac{21}{48} + 3 \frac{20}{48} = 4 \frac{41}{48}$ *Перевод:* а) $14 \frac{3}{7} + 5 \frac{1}{3} = 14 \frac{9}{21} + 5 \frac{7}{21} = 19 \frac{16}{21}$ б) $2 \frac{1}{3} + 1 \frac{2}{5} = 2 \frac{5}{15} + 1 \frac{6}{15} = 3 \frac{11}{15}$ в) $4 \frac{7}{12} + 3 \frac{2}{7} = 4 \frac{49}{84} + 3 \frac{24}{84} = 7 \frac{73}{84}$ г) $9 \frac{4}{7} + 2 \frac{1}{6} = 9 \frac{24}{42} + 2 \frac{7}{42} = 11 \frac{31}{42}$ д) $8 \frac{2}{15} + 14 \frac{1}{4} = 8 \frac{8}{60} + 14 \frac{15}{60} = 22 \frac{23}{60}$ е) $2 \frac{12}{35} + 1 \frac{1}{7} = 2 \frac{12}{35} + 1 \frac{5}{35} = 3 \frac{17}{35}$ ж) $21 \frac{4}{5} + 2 \frac{2}{11} = 21 \frac{44}{55} + 2 \frac{10}{55} = 23 \frac{54}{55}$ з) $1 \frac{7}{16} + 3 \frac{5}{12} = 1 \frac{21}{48} + 3 \frac{20}{48} = 4 \frac{41}{48}$