This study aims to find out and identify the types of errors and factors that cause mistakes made by students in solving material story problems of the Two-Variable Linear Equation System when viewed from the students' verbal ability and numerical ability. This research was conducted at MA Mansyaul Ulum Cikijing Majalengka class XI. This research uses a descriptive qualitative approach and the qualitative data analysis used is triangulation techniques. The data collection techniques used in this study were the SPLDV written test, the story question writing test, observation, interviews and documentation. The data analysis techniques used are data collection, data reduction, data presentation and drawing conclusions. The results of the study from 6 of the most dominant subjects were 6 person also subjects who experienced final answer writing errors were and 4 person of subjects who experienced misunderstandings were. Subjects who experienced reading errors were 2 person. Subjects who experienced transformation errors 3 person. Subjects who experienced process skills errors 3 person. Factors causing student error as a whole are the lack of explanation from the teacher, the lack of practice of questions in the form of stories, forgetting formulas, rushing and lack of student accuracy in solving problems. The findings in this study are that students who have verbal abilities still experience errors in doing problems, especially in terms of changing story sentences into mathematical models, miscalculations and not knowing the flow of working on the questions. Likewise with students who have numerical abilities, students who have numerical abilities experience relatively few errors compared to students who have verbal abilities.