А. Запишите ответ в виде несократимой дроби или в виде смешанного числа с несократимой дробной частью.
1) \(\frac{5}{8} + \frac{3}{8} = \frac{5+3}{8} = \frac{8}{8} = 1\)
2) \(\frac{5}{21} + \frac{2}{21} = \frac{5+2}{21} = \frac{7}{21} = \frac{1}{3}\)
3) \(\frac{8}{15} + \frac{2}{15} = \frac{8+2}{15} = \frac{10}{15} = \frac{2}{3}\)
4) \(\frac{9}{35} + \frac{6}{35} = \frac{9+6}{35} = \frac{15}{35} = \frac{3}{7}\)
5) \(\frac{3}{22} + \frac{8}{22} = \frac{3+8}{22} = \frac{11}{22} = \frac{1}{2}\)
6) \(\frac{4}{9} + \frac{2}{9} = \frac{4+2}{9} = \frac{6}{9} = \frac{2}{3}\)
7) \(\frac{10}{21} + \frac{4}{21} = \frac{10+4}{21} = \frac{14}{21} = \frac{2}{3}\)
8) \(\frac{11}{12} + \frac{5}{12} = \frac{11+5}{12} = \frac{16}{12} = \frac{4}{3} = 1\frac{1}{3}\)
9) \(\frac{13}{15} + \frac{8}{15} = \frac{13+8}{15} = \frac{21}{15} = \frac{7}{5} = 1\frac{2}{5}\)
10) \(\frac{43}{50} + \frac{13}{50} = \frac{43+13}{50} = \frac{56}{50} = \frac{28}{25} = 1\frac{3}{25}\)
11) \(\frac{13}{24} + \frac{5}{24} = \frac{13+5}{24} = \frac{18}{24} = \frac{3}{4}\)
12) \(\frac{25}{42} + \frac{11}{42} = \frac{25+11}{42} = \frac{36}{42} = \frac{6}{7}\)
13) \(\frac{7}{15} + \frac{2}{15} = \frac{7+2}{15} = \frac{9}{15} = \frac{3}{5}\)
14) \(\frac{29}{33} + \frac{7}{33} = \frac{29+7}{33} = \frac{36}{33} = \frac{12}{11} = 1\frac{1}{11}\)
15) \(\frac{9}{10} + \frac{3}{10} + \frac{6}{10} + \frac{1}{5} = \frac{9}{10} + \frac{3}{10} + \frac{6}{10} + \frac{2}{10} = \frac{9+3+6+2}{10} = \frac{20}{10} = 2\)
16) \(\frac{5}{9} + \frac{7}{9} = \frac{5+7}{9} = \frac{12}{9} = \frac{4}{3} = 1\frac{1}{3}\)
17) \(\frac{7}{15} + \frac{13}{15} = \frac{7+13}{15} = \frac{20}{15} = \frac{4}{3} = 1\frac{1}{3}\)
18) \(\frac{14}{25} + \frac{16}{25} = \frac{14+16}{25} = \frac{30}{25} = \frac{6}{5} = 1\frac{1}{5}\)
19) \(\frac{11}{14} + \frac{5}{14} = \frac{11+5}{14} = \frac{16}{14} = \frac{8}{7} = 1\frac{1}{7}\)
20) \(\frac{13}{22} + \frac{15}{22} = \frac{13+15}{22} = \frac{28}{22} = \frac{14}{11} = 1\frac{3}{11}\)
21) \(\frac{7}{12} + \frac{11}{12} = \frac{7+11}{12} = \frac{18}{12} = \frac{3}{2} = 1\frac{1}{2}\)
Ответ: См. решение выше
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