texmath-0.6.7: tests/writers/mfracBalign16.tex
\begin{array}{c}
{x}-\frac{{a}}{{b}} {x} \\
{x}-\frac{1}{{b}} {x} \\
{x}-\frac{1}{2} {x} \\
{x}-\frac{{1}^{2}}{{z}} {x} \\
{x}-\frac{{z}}{{1}^{2}} {x} \\
\end{array}\begin{array}{c}
{x}-\frac{{a}}{{b}} {x} \\
{x}-\frac{1}{{b}} {x} \\
{x}-\frac{1}{2} {x} \\
{x}-\frac{{1}^{2}}{{z}} {x} \\
{x}-\frac{{z}}{{1}^{2}} {x} \\
\end{array}