>I'm amazed/amused that we're having this discussion at all. That's elementary school algebra.
That is why I thought there was a joke in the solution, like some funny text would appear in the solution or something.
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges