I am retaking Linear Algebra and Differential Equations classes this year. Now Differential equations are not that bad imo, but out of all calculus topics, Linear Algebra is by far the hardest and also the most annoying one. I want tips on how to do elementary row operations without getting stuck every time i try to pick a number, because every time i do gaussian elimination/eros, i always get it wrong, like always. Can you guys give me some tricks and tips on doing this tedious topic. I want to be able to do it without getting them wrong all the time as this topic connects everything else in this course.