Q.E.D. iff - proven end - - Vol. 21 Ch. 41 - Diophantine Equations

[MangaDex]

 

[binhan811]

math

 

[zerio]

Math VR class would be cool

 

[vangstampede]

Just read official Indonesian release, they translated the math explanation in a way that confused the hell outta me so I had to go back here to recomprehend the explanation.