1) Выполни действие a) \frac{11}{27} \cdot 9 = б) \frac{3}{7} \div 21 = в) \frac{33}{100} \cdot \frac{25}{63} = г) \frac{6}{7} \cdot \frac{7}{6} = д) \frac{5}{9} \div \frac{5}{18} = e) 5 \cdot \frac{12}{25} = ж) 5 \frac{2}{5} \cdot 3 \frac{5}{9} = з) 3 \frac{3}{10} \div 1 \frac{3}{8} =

Ответ:

• a) \(\frac{11}{3}\) или \(3 \frac{2}{3}\)
• б) \(\frac{1}{49}\)
• в) \(\frac{11}{84}\)
• г) 1
• д) 2
• е) \(\frac{12}{5}\) или \(2 \frac{2}{5}\)
• ж) \(\frac{17}{5} \times \frac{32}{9} = \frac{544}{45} = 12 \frac{4}{45}\)
• з) \(\frac{33}{10} \div \frac{11}{8} = \frac{33}{10} \times \frac{8}{11} = \frac{3 \times 4}{5} = \frac{12}{5} = 2\frac{2}{5}\)