Koten, O., Sulistyowati, F., Ahsan, M. G. K., & Kuncoro, K. S. (2023). Understanding common errors in solving math problems on systems of linear equations with two variables: A study of 8th grade students. Union: Jurnal Ilmiah Pendidikan Matematika, 11(2), 348–355. https://doi.org/10.30738/union.v11i2.14910