[tex] \frac{2 \sqrt{3} - 3 \sqrt{2} }{6} = \frac{2 \times 1.7 - 3 \times 1.4}{6} = \frac{3.4 - 4.2}{6} = \frac{ - 0.8}{6} = - \frac{8}{10} \div 6 = - \frac{4}{5} \times \frac{1}{6} = - \frac{4}{30} = - \frac{2}{15} [/tex]
