Ika Wulan Junianti, Subanji, & Susanto, H. (2025). VARIATION OF VOCATIONAL STUDENTS’ DIFFICULTIES IN SOLVING SYSTEM LINEAR INEQUALITY PROBLEM BASED ON POLYA’S THEORY: VARIASI KESULITAN SISWA KEJURUAN DALAM MENYELESAIKAN SISTEM PERTIDAKSAMAAN LINEAR BERDASARKAN TEORI POLYA. MaPan : Jurnal Matematika Dan Pembelajaran, 13(1), 85–102. https://doi.org/10.24252/mapan.2025v13n1a5