Siahaan, Meiva Marthaulina Lestari, Fitriani, and Angelika Rosa Da Lima Leli. 2023. “A Study of Learning Obstacles: Determining Solutions of a System of Linear Equation Using Gauss-Jordan Method”. Mosharafa: Jurnal Pendidikan Matematika 12 (1):25-34. https://doi.org/10.31980/mosharafa.v12i1.748.