Answer:
[tex] \boxed{ \frac{cd}{e} = - 15} [/tex]
Given:
[tex]c = - 9 \\ d = - 20 \\ e = - 12[/tex]
Step-by-step explanation:
[tex] = > \frac{cd}{e} \\ \\ = > \frac{( - 9)( - 20)}{( - 12)} \\ \\ = > \frac{9 \times 20}{( - 12)} \\ \\ = > - \frac{180}{12} \\ \\ = > - 15[/tex]
