Правило:
Чтобы сократить дробь, надо числитель и знаменатель разделить на одно и то же число (общий делитель).
Примеры:
- \(\frac{6}{30} = \frac{6:6}{30:6} = \frac{1}{5}\)
- \(\frac{7}{12} = \frac{7 \cdot 8}{12 \cdot 4} = \frac{7}{3}\) ( \(\frac{7}{12} = \frac{7 \cdot 4}{12 \cdot 3} = \frac{7}{3}\) )
Практика
Сократите дробь:
- \(\frac{3}{63} = \frac{3:3}{63:3} = \frac{1}{21}\)
- \(\frac{8}{10} = \frac{8:2}{10:2} = \frac{4}{5}\)
- \(\frac{4}{96} = \frac{4:4}{96:4} = \frac{1}{24}\)
- \(\frac{10}{25} = \frac{10:5}{25:5} = \frac{2}{5}\)
- \(2 \frac{14}{16} = 2 \frac{14:2}{16:2} = 2 \frac{7}{8}\)
- \(\frac{7}{84} = \frac{7:7}{84:7} = \frac{1}{12}\)
- \(21 \frac{28}{32} = 21 \frac{28:4}{32:4} = 21 \frac{7}{8}\)
- \(9 \frac{12}{30} = 9 \frac{12:6}{30:6} = 9 \frac{2}{5}\)
- \(3 \frac{26}{30} = 3 \frac{26:2}{30:2} = 3 \frac{13}{15}\)
- \(3 \frac{18}{24} = 3 \frac{18:6}{24:6} = 3 \frac{3}{4}\)
- \(\frac{25}{75} = \frac{25:25}{75:25} = \frac{1}{3}\)
- \(\frac{42}{126} = \frac{42:42}{126:42} = \frac{1}{3}\)
- \(4 \frac{33}{77} = 4 \frac{33:11}{77:11} = 4 \frac{3}{7}\)
- \(8 \frac{35}{84} = 8 \frac{35:7}{84:7} = 8 \frac{5}{12}\)
- \(\frac{48}{72} = \frac{48:24}{72:24} = \frac{2}{3}\)
- \(6 \frac{34}{50} = 6 \frac{34:2}{50:2} = 6 \frac{17}{25}\)
- \(10 \frac{15}{63} = 10 \frac{15:3}{63:3} = 10 \frac{5}{21}\)
- \(12 \frac{16}{20} = 12 \frac{16:4}{20:4} = 12 \frac{4}{5}\)