NAFIS, Hendri Lutfiatul Hamam; USODO, B; SISWANTO, Siswanto; NURHASANAH, Farida. Analysis of Epistemological Obstacles on the Material of Two-variable Linear Equation System. KnE Social Sciences, [S. l.], v. 10, n. 11, p. 257–271, 2025. DOI: 10.18502/kss.v10i11.18747. Disponível em: https://knepublishing.com/index.php/KnE-Social/article/view/18747. Acesso em: 20 jul. 2025.