<<< native
[ EFraction
    NormalFrac
    (EIdentifier "x")
    (EFraction NormalFrac (EIdentifier "y") (ENumber "2"))
, ESymbol Rel "="
, EFraction
    NormalFrac
    (EIdentifier "x")
    (EFraction NormalFrac (EIdentifier "y") (ENumber "2"))
, ESymbol Rel "="
, EFraction
    NormalFrac
    (EIdentifier "x")
    (EFraction NormalFrac (EIdentifier "y") (ENumber "2"))
]
>>> tex
\frac{x}{\frac{y}{2}} = \frac{x}{\frac{y}{2}} = \frac{x}{\frac{y}{2}}