MilkandCookies - Pigeon: Impossible

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//One day our teacher would give us a problem and solve for X. No problem. But then, the next day, the teacher would give us another problem and X would equal SOMETHING COMPLETELY DIFFERENT! I mean, come on! We just solved for X yesterday! How can X be all these different numbers?! Don't get me started on imaginary numbers. That's a racket if I've ever heard one. They're making up numbers, people! // via