Solaiman, Edwin. “Solution Approach of Linear Equations Without Fractional Systems by Using Modification Method Gauss – Jordan for 3 Variables and 3 Equations”. Abstract Proceedings International Scholars Conference 6, no. 1 (October 29, 2018): 145. Accessed June 17, 2021. https://jurnal.unai.edu/index.php/isc/article/view/1206.