Complex sentence: She developed an economic process-monitoring computer system as well as created and taught curriculim on technical programs and result interpretation in Europe and North America until leaving Exxon in 1983 to found Sistemas Corporation.
Split into simpler sentences: She developed an economic process-monitoring computer system. She created and taught curriculim on technical programs and result interpretation in Europe and North America until leaving Exxon in 1983 to found Sistemas Corporation.