HUTABARAT, Intan Syalomi; HUDA, Nizlel; THEIS, Roseli. The Analysis Understanding of Mathematics Concepts as Seen from Students’ Self-Efficacy in Solving SPLDV. OMEGA: Jurnal Keilmuan Pendidikan Matematika, [S. l.], v. 5, n. 2, p. 265–280, 2026. DOI: 10.47662/jkpm.v5i2.1267. Disponível em: https://ejurnal.univamedan.ac.id/index.php/jkpm/article/view/1267. Acesso em: 12 jun. 2026.