[tex] \frac{3}{2} \times \frac{5}{6} + \frac{3}{2} \times \frac{10}{9} - \frac{3}{2} \times \frac{13}{18} = \frac{3}{2} ( \frac{5}{6} + \frac{10}{9} - \frac{13}{18} = \frac{3}{2} ( \frac{3 \times 5 + 2 \times 10 - 13}{18} ) = \frac{3}{2} ( \frac{15 + 20 - 13}{18} = \frac{3}{2} \times \frac{22}{18} = \frac{11}{6} 1 \frac{5}{6} \\ \frac{4}{5} \times \frac{8}{5} - \frac{4}{5} \times \frac{24}{25} + \frac{1}{25 } \times \frac{4}{5} = \frac{4}{5} \times ( \frac{8}{5} - \frac{24}{25} + \frac{1}{25} ) = \frac{4}{5} \times ( \frac{40 - 24 - 1}{25} ) = \frac{4}{5} \times \frac{15}{25} = \frac{12}{25} [/tex]
