I have, as part of an equation, the object

a^{5} \left(\frac{b}{c}\right)^{\frac{2}{3}}

The problem is that the 2 and 3 are very small (compared to the 5) and I would like all sub/superscripts to be the same size just as all body text is the same size. Is there a way of defining the font size inside the equation environment?

  • Have you tried dfrac in place of frac?
    – 56phil
    Sep 5, 2012 at 16:42
  • 1
    I suggest writing ^{2/3} or stick to \frac.
    – egreg
    Sep 5, 2012 at 17:36

2 Answers 2


Try dfrac instead of frac:

a^{5} \left(\dfrac{b}{c}\right)^{\dfrac{2}{3}}

You will need the amsmath package

  • 2
    But then the 2 and 3 are larger than the 5! Sep 5, 2012 at 16:50
  • I did not realize that. TY.
    – mythealias
    Sep 5, 2012 at 17:04

I've managed to solve it by replacing \frac by \tfrac.

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