<<< 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" ]))
    ]
]
>>> eqn
2 = left ( {left ( 3 - x right ) times 2} over {3 - x} right )