<<< native
[ ENumber "2"
, ESymbol Rel "="
, EDelimited
    "("
    ")"
    [ Right
        (EFraction
           NormalFrac
           (EGrouped
              [ EDelimited
                  "("
                  ")"
                  [ Right (ENumber "3")
                  , Right (ESymbol Bin "\8722")
                  , Right (EIdentifier "x")
                  ]
              , ESymbol Bin "\215"
              , ENumber "2"
              ])
           (EGrouped [ ENumber "3" , ESymbol Bin "\8722" , EIdentifier "x" ]))
    ]
]
>>> tex
2 = \left( \frac{(3 - x) \times 2}{3 - x} \right)