Sitorus, Z., M. Jannah, N. Nurliana, and S. N. Selase. “Comparison of Speed Completion System Linear Equations Using the Elimination Method and Using Arithmetic Sequences”. Journal Of Education And Teaching Learning (JETL), vol. 5, no. 3, Sept. 2023, pp. 268-76, doi:10.51178/jetl.v5i3.1527.