Răspuns:
[tex] \frac{13}{3} \div \frac{27}{3} - \frac{2}{3} \times 5 = \frac{13}{3} \div \frac{27}{3} - \frac{2}{3} \times \frac{5}{1} = \frac{13}{3} \times \frac{3}{27} - \frac{10}{3} = \frac{39}{81} - \frac{10}{3} = \frac{39}{81} - \frac{40}{81} = - \frac{1}{81} [/tex]
