Wahyuni, S., Noviani, J., Ismayanti, & Saputra, E. (2023). Analysis of High School Students’ Difficulties in the Material of Two Variable Linear Equation Systems. EL-Hadhary: Jurnal Penelitian Pendidikan Multidisiplin, 1(01), 39–51. https://doi.org/10.61693/elhadhary.vol101.2023.39-51