I'm just thinking if someone can give me a few tips here so that I can understand the concepts behind addiftive inverse of a where the entries are from z7. I find solving equations really difficult. I work part time and thus have no time left to take extra classes. Can you guys suggest any online resource that can help me with this subject?

I’m know little in addiftive inverse of a where the entries are from z7. However, it’s quite hard to explain it. I may help you answer it but since the solution is complex, I doubt you will really understand the whole process of solving it so it’s recommended that you really have to ask someone to explain it to you in person to make the explaining clearer. Good thing is that there’s this software that can help you with your problems. It’s called Algebrator and it’s an amazing piece of program because it does not only show the answer but it also shows the process of solving it. How cool is that?

I remember having problems with trinomials, like denominators and trigonometric functions. Algebrator is a truly great piece of algebra software. I have used it through several algebra classes - Basic Math, Remedial Algebra and Algebra 2. I would simply type in the problem from a workbook and by clicking on Solve, step by step solution would appear. The program is highly recommended.