№1. Восполнии умножение: 1) \frac{5}{27} \cdot 3 2) \frac{2}{9} \cdot 3 \frac{1}{16} 3) 3 \frac{3}{11} \cdot 7 \frac{1}{3} 4) 70 \cdot \frac{5}{126} 5) \frac{24}{77} \cdot \frac{51}{40} 6) \frac{20}{23} \cdot \frac{43}{48} \cdot \frac{46}{73}

1) \(\frac{5}{27} \cdot 3 = \frac{5 \cdot 3}{27} = \frac{5}{9}\)

2) \(\frac{2}{9} \cdot 3 \frac{1}{16} = \frac{2}{9} \cdot \frac{49}{16} = \frac{2 \cdot 49}{9 \cdot 16} = \frac{49}{9 \cdot 8} = \frac{49}{72}\)

3) \(3 \frac{3}{11} \cdot 7 \frac{1}{3} = \frac{36}{11} \cdot \frac{22}{3} = \frac{36 \cdot 22}{11 \cdot 3} = \frac{12 \cdot 2}{1 \cdot 1} = 24\)

4) \(70 \cdot \frac{5}{126} = \frac{70 \cdot 5}{126} = \frac{350}{126} = \frac{25}{9}\)

5) \(\frac{24}{77} \cdot \frac{51}{40} = \frac{24 \cdot 51}{77 \cdot 40} = \frac{3 \cdot 51}{77 \cdot 5} = \frac{153}{385}\)

6) \(\frac{20}{23} \cdot \frac{43}{48} \cdot \frac{46}{73} = \frac{20 \cdot 43 \cdot 46}{23 \cdot 48 \cdot 73} = \frac{20 \cdot 43 \cdot 2}{1 \cdot 48 \cdot 73} = \frac{5 \cdot 43 \cdot 2}{1 \cdot 12 \cdot 73} = \frac{430}{876} = \frac{215}{438}\)

Ответ: 1) \(\frac{5}{9}\); 2) \(\frac{49}{72}\); 3) \(24\); 4) \(\frac{25}{9}\); 5) \(\frac{153}{385}\); 6) \(\frac{215}{438}\)