Explicație pas cu pas:
[tex](- \frac{7}{8} ) \times (- \frac{ {2}^{3} }{ {3}^{2} }) \times (- \frac{ {3}^{2} }{10}) \times (- \frac{10}{11}) \times (- \frac{11}{7})= - \frac{7 \times {2}^{3} \times {3}^{2} \times 10 \times 11 }{ {2}^{3} \times {3}^{2} \times 10 \times 11 \times 7 } = - 1[/tex]