Rewrite the expression in a more complete and clear format if it represents a specific problem or provide more context.
For example, if this is an isolated expression, it could be part of a larger question:
"Evaluate the expression: [tex] -\frac{1}{5x} [/tex] for a given value of [tex] x [/tex]."
Alternatively, if additional context is provided, ensure the full question is clear and coherent.
If the expression is indeed part of a question, provide the full problem for clarity.