Hafizah, N., S. Nurhalimah, W. L. Utami, and L. M. Angraini. “Analysis of Problem-Solving Ability of Junior High School Students in A System of Linear Equations With One Variable”. International Journal of Contemporary Studies in Education (IJ-CSE), vol. 4, no. 1, Feb. 2025, pp. 1-14, doi:10.56855/ijcse.v4i1.1046.