Most older algebra texts by authors like Zimmer include odd-numbered answers in the back. Use these to reverse-engineer the logic of the problem.
Finding a digital copy of can be a challenge, especially since many older or specialized textbooks haven’t been fully digitized for public access. charles zimmer transitions in advanced algebra pdf work
Detailed proofs and real-world applications (like compound interest and decay) that are often glossed over in introductory courses. Most older algebra texts by authors like Zimmer