2.205. Найдите сумму: а) 4 2/9 + 3 5/18; б) 3 5/12 + 4 2/9; в) 7 11/12 + 1 3/8; г) 4 3/8 + 2 1/11; д) 6 5/11 + 5; е) 7 3/7 + 5/21; ж) 6 + 4 2/7; з) 3/7 + 3 1/5.

1. \(4\frac{2}{9}+3\frac{5}{18}=7+\frac{4+5}{18}=7\frac{1}{2}\).
2. \(3\frac{5}{12}+4\frac{2}{9}=7+\frac{15+8}{36}=7\frac{23}{36}\).
3. \(7\frac{11}{12}+1\frac{3}{8}=8+\frac{22+9}{24}=8+1\frac{7}{24}=9\frac{7}{24}\).
4. \(4\frac{3}{8}+2\frac{1}{11}=6+\frac{33+8}{88}=6\frac{41}{88}\).
5. \(6\frac{5}{11}+5=11\frac{5}{11}\).
6. \(7\frac{3}{7}+\frac{5}{21}=7+\frac{9+5}{21}=7\frac{2}{3}\).
7. \(6+4\frac{2}{7}=10\frac{2}{7}\).
8. \(\frac{3}{7}+3\frac{1}{5}=3+\frac{15+7}{35}=3\frac{22}{35}\).

Ответ: а) \(7\frac{1}{2}\); б) \(7\frac{23}{36}\); в) \(9\frac{7}{24}\); г) \(6\frac{41}{88}\); д) \(11\frac{5}{11}\); е) \(7\frac{2}{3}\); ж) \(10\frac{2}{7}\); з) \(3\frac{22}{35}\).