Выполни сложение или вычитание.

Конечно, давай помогу! Здесь нужно складывать или вычитать дроби. Чтобы это сделать, нужно привести дроби к общему знаменателю, а потом сложить или вычесть числители. 1) $\frac{1}{2} + \frac{3}{8} = \frac{4}{8} + \frac{3}{8} = \frac{7}{8}$ 2) $\frac{2}{7} + \frac{5}{14} = \frac{4}{14} + \frac{5}{14} = \frac{9}{14}$ 3) $\frac{3}{5} + \frac{4}{15} = \frac{9}{15} + \frac{4}{15} = \frac{13}{15}$ 4) $\frac{1}{8} + \frac{3}{16} = \frac{2}{16} + \frac{3}{16} = \frac{5}{16}$ 5) $\frac{2}{9} + \frac{5}{18} = \frac{4}{18} + \frac{5}{18} = \frac{9}{18} = \frac{1}{2}$ 6) $\frac{8}{13} - \frac{1}{26} = \frac{16}{26} - \frac{1}{26} = \frac{15}{26}$ 7) $\frac{7}{15} - \frac{7}{30} = \frac{14}{30} - \frac{7}{30} = \frac{7}{30}$ 8) $\frac{2}{19} - \frac{1}{38} = \frac{4}{38} - \frac{1}{38} = \frac{3}{38}$ 9) $\frac{5}{7} - \frac{3}{14} = \frac{10}{14} - \frac{3}{14} = \frac{7}{14} = \frac{1}{2}$ 10) $\frac{4}{21} - \frac{1}{7} = \frac{4}{21} - \frac{3}{21} = \frac{1}{21}$ 11) $\frac{7}{20} + \frac{11}{50} = \frac{35}{100} + \frac{22}{100} = \frac{57}{100}$ 12) $\frac{17}{33} - \frac{5}{22} = \frac{34}{66} - \frac{15}{66} = \frac{19}{66}$ 13) $\frac{27}{76} - 0 = \frac{27}{76}$ 14) $\frac{9}{20} + \frac{5}{8} = \frac{18}{40} + \frac{25}{40} = \frac{43}{40} = 1 \frac{3}{40}$ 15) $\frac{2}{7} + \frac{13}{28} = \frac{8}{28} + \frac{13}{28} = \frac{21}{28} = \frac{3}{4}$ 16) $\frac{5}{13} - \frac{14}{39} = \frac{15}{39} - \frac{14}{39} = \frac{1}{39}$ 17) $\frac{5}{8} - \frac{2}{7} = \frac{35}{56} - \frac{16}{56} = \frac{19}{56}$ 18) $\frac{3}{4} + \frac{5}{12} = \frac{9}{12} + \frac{5}{12} = \frac{14}{12} = \frac{7}{6} = 1 \frac{1}{6}$ 19) $\frac{15}{23} - \frac{27}{46} = \frac{30}{46} - \frac{27}{46} = \frac{3}{46}$ 20) $\frac{9}{25} - \frac{14}{117} = \frac{1053}{2925} - \frac{350}{2925} = \frac{703}{2925}$ 21) $\frac{17}{35} - \frac{13}{28} = \frac{68}{140} - \frac{65}{140} = \frac{3}{140}$ 22) $1 - \frac{2}{7} = \frac{7}{7} - \frac{2}{7} = \frac{5}{7}$ 23) $1 \frac{7}{33} + \frac{5}{22} = \frac{40}{33} + \frac{5}{22} = \frac{80}{66} + \frac{15}{66} = \frac{95}{66} = 1 \frac{29}{66}$ 24) $1 \frac{5}{12} - \frac{7}{10} = \frac{17}{12} - \frac{7}{10} = \frac{85}{60} - \frac{42}{60} = \frac{43}{60}$ 25) $7 \frac{7}{8} - 1 \frac{9}{10} = \frac{63}{8} - \frac{19}{10} = \frac{315}{40} - \frac{76}{40} = \frac{239}{40} = 5 \frac{39}{40}$ 26) $12 \frac{3}{10} - 5 \frac{11}{15} = \frac{123}{10} - \frac{76}{15} = \frac{369}{30} - \frac{152}{30} = \frac{217}{30} = 7 \frac{7}{30}$ 27) $7 \frac{7}{15} - 1 \frac{3}{20} = \frac{112}{15} - \frac{23}{20} = \frac{448}{60} - \frac{69}{60} = \frac{379}{60} = 6 \frac{19}{60}$ 28) $5 \frac{1}{9} + 3 \frac{2}{5} = \frac{46}{9} + \frac{17}{5} = \frac{230}{45} + \frac{153}{45} = \frac{383}{45} = 8 \frac{23}{45}$ 29) $3 \frac{3}{8} + 1 \frac{5}{12} = \frac{27}{8} + \frac{17}{12} = \frac{81}{24} + \frac{34}{24} = \frac{115}{24} = 4 \frac{19}{24}$ 30) $62 \frac{2}{3} - 3 \frac{5}{8} = \frac{188}{3} - \frac{29}{8} = \frac{1504}{24} - \frac{87}{24} = \frac{1417}{24} = 59 \frac{1}{24}$ 31) $12 - 10 \frac{7}{9} = \frac{108}{9} - \frac{97}{9} = \frac{11}{9} = 1 \frac{2}{9}$ 32) $18 - 11 \frac{8}{13} = \frac{234}{13} - \frac{151}{13} = \frac{83}{13} = 6 \frac{5}{13}$ 33) $15 \frac{3}{17} - 4 = \frac{258}{17} - \frac{68}{17} = \frac{190}{17} = 11 \frac{3}{17}$