Răspuns:
[tex]a) \: \frac{15}{7} \div 3 \\ = \frac{5}{7} \\ \\ b) \: \frac{14}{15} \div \frac{3}{10} \\ = \frac{14}{15} \times \frac{10}{3} \\ = \frac{14}{3} \times \frac{2}{3} \\ = \frac{28}{9} [/tex]