I have an equation using fractions of fractions – much like

`\frac{\frac{a}{b}}{\frac{c}{d}}`

However, all of the fraction bars are the same width. I'd like to make the central bar wider than the others for improved readability. Is this possible? I've played around with shrinking the fond sizes of the numerator and denominator a bit, but that still doesn't improve readability.

## Best Answer

Some space can be added in the outer nominator/denominator, e.g.: