Răspuns:
a) \( \frac{5}{3} \times \frac{6}{5} = \frac{10}{5} = 2 \)
b) \( 6 + \frac{3}{2} \times \frac{3}{10} = 6 + \frac{9}{20} \)
c) \( \frac{4\frac{2}{5}}{\frac{12}{15}} = \frac{\frac{22}{5}}{\frac{4}{3}} = \frac{22}{5} \times \frac{3}{4} \)
d) \( 2 + \frac{5}{6} \div \frac{17}{4} = 2 + \frac{5}{6} \times \frac{4}{17} \)