Whenever I'm on math class I've noticed that often professors, and in my online class the videos and examples all seem to be the most complicated way to finding the answer. For example if solving for an equation by elimination they'll go for eliminating y, even though you could just as easily eliminate x without any modifications to the equation. Do they do this because they just prefer to eliminate y first? My second question is the topic. Is there ever a time when you just have to use that complicated solution your teacher taught you? I use the simplest way to solve a problem to eliminate as many possibilities for error I can. Is this a bad habit?