Loading ad... LadyMember for 2 years 5 months Age: 12-14 Level: 10mo. Language: Spanish (es) ID: 1963489 26/03/2022 Country code: EC Country: Ecuador School subject: Pensamiento Matemático (1061716) Main content: Sistema de ecuaciones (1739293) Método de sustitución Other contents: Algebra Loading ad... Share / Print Worksheet Google Classroom Microsoft Teams Facebook Pinterest Twitter Whatsapp Download PDF Loading ad...