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Titania Budiman, Victor R. Sulangi, John R. Wenas. Implementation Of Problem Based Learning Models In Learning Systems Of Linear Equations Three Variables. Khirani [Internet]. 2023 May 28 [cited 2025 Jan. 7];1(2):10-7. Available from: https://e-journal.nalanda.ac.id/index.php/KHIRANI/article/view/197