Original sentence: They can be relatively inefficient for numeric operations compared to numeric systems.This, along with its successors (including the TI-89 series and the newer TI-Nspire CAS released in 2007) featured a reasonably capable and relatively inexpensive hand-held computer algebra system
Edited sentence: They can be inefficient for numeric operations compared to numeric systems.This, along with its successors (including the TI-89 series and the newer TI-Nspire CAS released in 2007) featured a reasonably capable and inexpensive hand-held computer algebra system