Explicație pas cu pas:
[tex]\Big( - \frac{ ^{2)} 2}{9} + \frac{^{3)}5}{6}\Big) \cdot \Big( - \frac{3}{11}\Big) + \Big( - \frac{7}{36}\Big) \cdot \Big(2 \frac{4}{7}\Big) = \\ = \Big( \frac{ - 4 + 15}{18}\Big) \cdot \Big( - \frac{3}{11}\Big) - \frac{ \not7}{36} \cdot \frac{18}{ \not7} \\ = \frac{11}{18} \cdot \Big( - \frac{3}{11}\Big) - \frac{1}{2} = - \frac{ \not11}{18} \cdot \frac{3}{ \not11} - \frac{1}{2} \\ = - \frac{1}{6} - \frac{^{3)}1}{2} = - \frac{1}{6} - \frac{3}{6} = - \frac{1 + 3}{6} \\ = - \frac{4}{6} = \bf - \frac{2}{3} [/tex]
