<<< native [ EFraction NormalFrac (EGrouped [ EIdentifier "x" , ESymbol Bin "+" , EIdentifier "y" , ESymbol Bin "+" , EIdentifier "z" ]) (EGrouped [ EIdentifier "x" , EPhantom (ESymbol Bin "+") , EPhantom (EIdentifier "y") , ESymbol Bin "+" , EIdentifier "z" ]) ] >>> tex \frac{x + y + z}{x\phantom{+}\phantom{y} + z}