It does, as I'm sure you know. There is no need to be condescending, I'm here for help, not to be judged. It does not however show how to solve for a 3x3 matrix that has 4 unknown coefficient variables.
I get that you are trying to help without flat out giving answers, but there are nicer ways of saying things, or... not saying certain things at all. I already get this attitude from the teacher, when I reach out for help, I don't need it from you too.
I haven't been in a math class of any kind in many years, and I have struggled enormously. When I finally do reach out for help, you can be guaranteed I've already tried for an hour or more to figure it out myself. I'm 43 years old, and I know that I have to put in the time and the work. I'm not some kid who wants everyone to do everything for her.