Răspuns:
[tex]1 \frac{7}{9} = \frac{1 \times 9 + 7}{9} = \frac{16}{9} [/tex]
[tex] - \frac{3}{4} \times \frac{16}{9} = - \frac{4}{3} = - 1 \frac{1}{3} [/tex]
