Ответ: Решения ниже
\[\frac{4}{15} \cdot 2 + \frac{3}{3} : 5 = \frac{8}{15} + 1 : 5 = \frac{8}{15} + \frac{1}{5} = \frac{8}{15} + \frac{3}{15} = \frac{11}{15}\]
Ответ: 11/15
\[\frac{3}{16} \cdot 5 - \frac{3}{4} : 4 = \frac{15}{16} - \frac{3}{4} \cdot \frac{1}{4} = \frac{15}{16} - \frac{3}{16} = \frac{12}{16} = \frac{3}{4}\]
Ответ: 3/4
\[\frac{7}{8} : 3 - \frac{1}{24} \cdot 5 = \frac{7}{8} \cdot \frac{1}{3} - \frac{5}{24} = \frac{7}{24} - \frac{5}{24} = \frac{2}{24} = \frac{1}{12}\]
Ответ: 1/12
\[\frac{9}{13} : 4 + \frac{5}{52} \cdot 3 = \frac{9}{13} \cdot \frac{1}{4} + \frac{5}{52} \cdot 3 = \frac{9}{52} + \frac{15}{52} = \frac{24}{52} = \frac{6}{13}\]
Ответ: 6/13
\[\frac{3}{20} \cdot 3 - \frac{3}{10} : 2 = \frac{9}{20} - \frac{3}{10} \cdot \frac{1}{2} = \frac{9}{20} - \frac{3}{20} = \frac{6}{20} = \frac{3}{10}\]
Ответ: 3/10
\[1 \frac{5}{18} \cdot 7 + \frac{5}{6} : 3 = \frac{23}{18} \cdot 7 + \frac{5}{6} \cdot \frac{1}{3} = \frac{161}{18} + \frac{5}{18} = \frac{166}{18} = \frac{83}{9} = 9 \frac{2}{9}\]
Ответ: 9 2/9
\[\frac{5}{11} : 2 + \frac{21}{22} : 3 = \frac{5}{11} \cdot \frac{1}{2} + \frac{21}{22} \cdot \frac{1}{3} = \frac{5}{22} + \frac{7}{22} = \frac{12}{22} = \frac{6}{11}\]
Ответ: 6/11
\[\frac{2}{25} \cdot 10 - \frac{7}{10} : 2 = \frac{2}{25} \cdot 10 - \frac{7}{10} \cdot \frac{1}{2} = \frac{20}{25} - \frac{7}{20} = \frac{4}{5} - \frac{7}{20} = \frac{16}{20} - \frac{7}{20} = \frac{9}{20}\]
Ответ: 9/20
\[4 \frac{4}{45} : 9 - \frac{2}{3} : 5 = \frac{184}{45} \cdot \frac{1}{9} - \frac{2}{3} \cdot \frac{1}{5} = \frac{184}{405} - \frac{2}{15} = \frac{184}{405} - \frac{54}{405} = \frac{130}{405} = \frac{26}{81}\]
Ответ: 26/81
\[1 \frac{5}{18} : 7 + \frac{5}{6} : 3 = \frac{23}{18} : 7 + \frac{5}{6} : 3 = \frac{23}{18} \cdot \frac{1}{7} + \frac{5}{6} \cdot \frac{1}{3} = \frac{23}{126} + \frac{5}{18} = \frac{23}{126} + \frac{35}{126} = \frac{58}{126} = \frac{29}{63}\]
Ответ: 29/63
\[\frac{5}{12} : 10 + \frac{7}{48} : 3 = \frac{5}{12} \cdot \frac{1}{10} + \frac{7}{48} \cdot \frac{1}{3} = \frac{5}{120} + \frac{7}{144} = \frac{1}{24} + \frac{7}{144} = \frac{6}{144} + \frac{7}{144} = \frac{13}{144}\]
Ответ: 13/144
\[\frac{7}{36} \cdot 4 - \frac{5}{9} : 2 = \frac{7}{36} \cdot 4 - \frac{5}{9} \cdot \frac{1}{2} = \frac{28}{36} - \frac{5}{18} = \frac{7}{9} - \frac{5}{18} = \frac{14}{18} - \frac{5}{18} = \frac{9}{18} = \frac{1}{2}\]
Ответ: 1/2
\[(\frac{4}{15} - \frac{1}{5}) \cdot 25 = (\frac{4}{15} - \frac{3}{15}) \cdot 25 = \frac{1}{15} \cdot 25 = \frac{25}{15} = \frac{5}{3} = 1\frac{2}{3}\]
Ответ: 1 2/3
\[(\frac{7}{12} + \frac{5}{36}) : 1 = (\frac{21}{36} + \frac{5}{36}) : 1 = \frac{26}{36} : 1 = \frac{13}{18} : 1 = \frac{13}{18}\]
Ответ: 13/18
\[(\frac{3}{16} + \frac{1}{4}) \cdot 8 = (\frac{3}{16} + \frac{4}{16}) \cdot 8 = \frac{7}{16} \cdot 8 = \frac{56}{16} = \frac{7}{2} = 3\frac{1}{2}\]
Ответ: 3 1/2
\[\frac{3}{8} : 6 + \frac{5}{32} : 4 = \frac{3}{8} \cdot \frac{1}{6} + \frac{5}{32} \cdot \frac{1}{4} = \frac{3}{48} + \frac{5}{128} = \frac{1}{16} + \frac{5}{128} = \frac{8}{128} + \frac{5}{128} = \frac{13}{128}\]
Ответ: 13/128
\[(\frac{7}{8} - \frac{5}{24}) \cdot 48 = (\frac{21}{24} - \frac{5}{24}) \cdot 48 = \frac{16}{24} \cdot 48 = \frac{2}{3} \cdot 48 = 32\]
Ответ: 32
\[(\frac{9}{13} - \frac{9}{39}) : 9 = (\frac{27}{39} - \frac{9}{39}) : 9 = \frac{18}{39} : 9 = \frac{18}{39} \cdot \frac{1}{9} = \frac{2}{39}\]
Ответ: 2/39
\[(\frac{5}{9} + \frac{2}{3}) : 11 = (\frac{5}{9} + \frac{6}{9}) : 11 = \frac{11}{9} : 11 = \frac{11}{9} \cdot \frac{1}{11} = \frac{1}{9}\]
Ответ: 1/9
\[(1 + \frac{1}{2} \frac{1}{5}) : 2 - 10 = (1 + \frac{6}{5}) : 2 - 10 = \frac{11}{5} : 2 - 10 = \frac{11}{5} \cdot \frac{1}{2} - 10 = \frac{11}{10} - 10 = \frac{11}{10} - \frac{100}{10} = -\frac{89}{10} = -8\frac{9}{10}\]
Ответ: -8 9/10
\[(\frac{3}{4} - \frac{5}{12}) \cdot 8 + \frac{1}{18} = (\frac{9}{12} - \frac{5}{12}) \cdot 8 + \frac{1}{18} = \frac{4}{12} \cdot 8 + \frac{1}{18} = \frac{1}{3} \cdot 8 + \frac{1}{18} = \frac{8}{3} + \frac{1}{18} = \frac{48}{18} + \frac{1}{18} = \frac{49}{18} = 2\frac{13}{18}\]
Ответ: 2 13/18
\[(15 + \frac{4}{5}) : 3 - \frac{1}{9} = (\frac{75}{5} + \frac{4}{5}) : 3 - \frac{1}{9} = \frac{79}{5} : 3 - \frac{1}{9} = \frac{79}{5} \cdot \frac{1}{3} - \frac{1}{9} = \frac{79}{15} - \frac{1}{9} = \frac{237}{45} - \frac{5}{45} = \frac{232}{45} = 5\frac{7}{45}\]
Ответ: 5 7/45
\[(\frac{7}{21} - \frac{1}{6}) \cdot 14 - \frac{1}{6} = (\frac{14}{42} - \frac{7}{42}) \cdot 14 - \frac{1}{6} = \frac{7}{42} \cdot 14 - \frac{1}{6} = \frac{1}{6} \cdot 14 - \frac{1}{6} = \frac{14}{6} - \frac{1}{6} = \frac{13}{6} = 2\frac{1}{6}\]
Ответ: 2 1/6