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Huu Hung T, Phuong Chi N, Cuong T. DEVELOPING MATHEMATICAL LITERACY THROUGH AN INSTRUCTIONAL PROCESS: A GRADE 9 CASE STUDYON SOLVING SYSTEMS OF LINEAR EQUATIONS IN TWO VARIABLES. HNUE Journal of Science: Educational Science [Internet]. 2026 Mar. 30 [cited 2026 Apr. 1];71(2):115-26. Available from: https://hnuejs.edu.vn/es/article/view/1323