Puspita RM, Syamsuri. Kesulitan Belajar Siswa SMP Pada Materi Sistem Persamaan Linear Dua Variabel. educatio [Internet]. 2022 Dec. 15 [cited 2025 May 12];8(4):1286-94. Available from: https://www.ejournal.unma.ac.id/index.php/educatio/article/view/3488