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![Lisensi Creative Commons](https://i.creativecommons.org/l/by/4.0/88x31.png)
Ciptaan disebarluaskan di bawah Lisensi Creative Commons Atribusi 4.0 Internasional.
Tetty Natalia Sipayung
https://orcid.org/0000-0002-3339-7126
Universitas Katolik Santo Thomas
Indonesia
Pendidikan Matematika
Inne Kristina Gulo
Universitas Katolik Santo Thomas
Indonesia
Pendidikan Matematika
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