Решение:
1) \(\frac{3}{19} \cdot 6 = \frac{3 \cdot 6}{19} = \frac{18}{19}\)
2) \(2 \cdot \frac{7}{11} = \frac{2 \cdot 7}{11} = \frac{14}{11} = 1\frac{3}{11}\)
3) \(7 \cdot \frac{3}{49} = \frac{7 \cdot 3}{49} = \frac{21}{49} = \frac{3}{7}\)
4) \(32 \cdot \frac{5}{8} = \frac{32 \cdot 5}{8} = \frac{160}{8} = 20\)
Ответы:
1) \(\frac{18}{19}\)
2) \(1\frac{3}{11}\)
3) \(\frac{3}{7}\)
4) 20