<<< native [ EFraction NormalFrac (ENumber "1") (EIdentifier "a") , ESymbol Bin "-" , EFraction NormalFrac (ENumber "1") (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" ]) , ESymbol Bin "-" , EFraction NormalFrac (ENumber "1") (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" , ESymbol Bin "+" , EIdentifier "a" ]) ] >>> eqn 1 over a - 1 over {a + a + a + a} - 1 over {a + a + a + a + a + a + a + a + a + a}