Treat the GDZ as a hint sheet , not a copy-paste source. Try the problem for 10 minutes first. If you’re stuck, look at the first two lines of the GDZ to get the "spark," then finish the calculation yourself.

Copying solutions without understanding the "why" leads to immediate failure when the numbers are changed during a test.

Alimov’s problems often require a specific sequence of steps. A good GDZ shows you the logic of the transformation, not just the final number.

The Alimov curriculum is a staple of Russian algebra education, and its is designed as a bridge to higher-level mathematics. If you’re looking for a review of using a GDZ (Готовые Домашние Задания) for this specific material, The Material: Alimov 7–9 Review

Since much of the 9th-grade final exam is based on these concepts, seeing a perfectly formatted solution helps you understand how to write out your work for full marks. Cons:

Are you preparing for the specifically, or just trying to catch up before starting the 10th-grade curriculum?

It acts as a private tutor when you're stuck on a complex system of equations.

Essential for moving into 10th-grade calculus.