[EFraction NormalFrac (EIdentifier "A") (EGrouped [EIdentifier "B",ESymbol Bin "+",EFraction NormalFrac (EIdentifier "C") (EGrouped [EIdentifier "D",ESymbol Bin "+",EFraction NormalFrac (EIdentifier "E") (EIdentifier "F")])]),ESymbol Rel "=",EFraction NormalFrac (EOver False (EIdentifier "A") (EPhantom (ENumber "0"))) (EGrouped [EIdentifier "B",ESymbol Bin "+",EFraction NormalFrac (EIdentifier "C") (EGrouped [EIdentifier "D",ESymbol Bin "+",EFraction NormalFrac (EIdentifier "E") (EUnder False (EIdentifier "F") (EPhantom (ENumber "0")))])])]