[tex]( - \frac{1}{3} - \frac{1}{6} ) \times (3 \frac{4}{9} - 1.5) = - \frac{35}{36} \\ - \frac{1}{3} - \frac{1}{6} = - \frac{2}{3} - \frac{1}{6} = - \frac{3}{6} = - \frac{1}{2} \\ 3 \frac{4}{9} - 1 \frac{1}{2} = 3 \frac{8}{18} - 1 \frac{9}{18} = 2 \frac{26}{18} - 1 \frac{9}{18} = 1 \frac{17}{18} \\ - \frac{1}{2} \times 1 \frac{17}{18} = - \frac{1 \times 35}{2 \times 18} = - \frac{35}{36} [/tex]