Answer:
Simplifying the expression gives;
[tex]-\frac{9}{20}[/tex]Explanation:
Given the fraction;
[tex]-\frac{1}{4}-\frac{1}{5}[/tex]Simplifying, the Lowest common multiple of the denominators 4 and 5 is;
[tex]4\times5=20[/tex]So, we have;
[tex]\begin{gathered} -\frac{1}{4}-\frac{1}{5} \\ \frac{-5-4}{20}=-\frac{9}{20} \end{gathered}[/tex]Therefore, simplifying the expression gives;
[tex]-\frac{9}{20}[/tex]