scholdoc-texmath-0.1: tests/writers/mrootSscriptlevel4.tex
\sqrt[\frac{x}{3}]{x - \frac{x}{3}} + \sqrt[\frac{x}{3}]{x - 3} + \sqrt[\frac{x}{3}]{x - 3} + \frac{x}{3}
\sqrt[\frac{x}{3}]{x - \frac{x}{3}} + \sqrt[\frac{x}{3}]{x - 3} + \sqrt[\frac{x}{3}]{x - 3} + \frac{x}{3}