Wahyuni S, Noviani J, Ismayanti, Saputra E. Analysis of High School Students’ Difficulties in the Material of Two Variable Linear Equation Systems. Jurnal Penelitian Pendidikan Multidisiplin [Internet]. 30 April 2023 [dikutip 12 Mei 2026];1(01):39-51. Tersedia pada: https://journal.webammi.org/index.php/JEH/article/view/8