Практикуемся 2) \(6 \frac{1}{4} \cdot 8 - 3 \frac{2}{5} \cdot \frac{5}{1} + 2 \frac{4}{7} \cdot 4 \frac{7}{12} \)

2) \(6 \frac{1}{4} \cdot 8 - 3 \frac{2}{5} \cdot \frac{5}{1} + 2 \frac{4}{7} \cdot 4 \frac{7}{12} = \frac{25}{4} \cdot 8 - \frac{17}{5} \cdot 5 + \frac{18}{7} \cdot \frac{55}{12} = \frac{200}{1} - 17 + \frac{990}{84}= 50 - 17 + \frac{165}{14} = 33 + 11 \frac{11}{14} = 44 \frac{11}{14}\)