Just as the title said. I've been wondering that for some time recently, so let's throw some scary-looking equations to find it out.

Let line and intersects at point (a, b). The value of is …

Let   be real numbers satisfying . The value of is ….

Actually, they work! Rather inconvenient though, as I had to copy-pasted each of the equations one by one by hand. They're legitimate typical math problem you'd usually find at textbooks. I wrote them for episode 1 of Just Usual Days (before the revamp) but now forgot the solutions heheheh. Well, I could work them out, but I'm lazy at this time. At the time the point to include these kind of equations was to illustrate just how advanced the curriculum class 3A had to endure for middle school level.

Behind the scenes, they're actually just.... PNGs. But hey, they still look crisp and nice. Maybe I could do, who knows, some kind of solution manual to math problems in the future...?