Răspuns:
[tex]( - \frac{3}{4} \times \frac{8}{6} + \frac{15}{20} ) \times ( - \frac{2}{3} ) {}^{3} \\ \\ = ( - \frac{2}{2} + \frac{15}{20} ) \times ( - ( \frac{2}{3} ) {}^{3} ) \\ \\ = - {} \frac{1}{4} {} \times ( - ( \frac{2}{3} ) {}^{3} ) \\ \\ = \frac{1}{4} \times ( \frac{2}{3} ) {}^{3} \\ \\ = \frac{1}{4} \times \frac{2 {}^{3} }{3 {}^{3} } \\ \\ = \frac{1}{4} \times \frac{8}{27} \\ \\ = \bf\blue{\boxed{ \frac{2}{27} }}[/tex]
