Step-by-step explanation:
1.)
[tex] - \frac{5}{3} \times \frac{1}{8} = - \frac{5}{24} \\ \\ [/tex]
2.)
[tex] - \frac{5}{2} \times \frac{1}{12} = - \frac{5}{24} \\ [/tex]
3.)
[tex] - \frac{1}{6} \times \frac{5}{4} = - \frac{5}{24} \\ [/tex]