         2
ye := -------
       a + b
latex:\black$\displaystyle \begin{equation}$
latex:\black$\displaystyle  \mathrm{ye~:=~}\frac{2}{a+b}$
latex:\black$\displaystyle \end{equation}$
latex:\black$\displaystyle  \mathrm{ye~:=~}\frac{2}{a+b}$
latex:\black$\displaystyle  \mathrm{\$ye~:=~}\frac{2}{a+b}\mathrm{\$}$
