Răspuns:
[tex] \frac{16}{3} \times \:(( \frac{75}{90} - 1) \div \frac{6}{9} = \\ \frac{16}{3} \times ( \frac{15}{90} \div \frac{6}{9} ) = \\ \frac{16}{3} \times ( \frac{15}{90} \times \frac{9}{6} ) \\ \frac{16}{3} \times \frac{1 \times 1}{2\times 2} \\ \frac{16}{3 \times 4} = \frac{4}{3} [/tex]