Try to solve the problem yourself for at least 10 minutes.
To actually benefit from these resources, try the :
Since Makarychev is a standard for the OGE (Basic State Exam), seeing solved versions of his "increased difficulty" problems is great practice. The Risks of "Copy-Paste"
Checking your work against a reliable source helps ensure you’re on the right track before handing it in.
If you just copy the numbers, you aren't building the "muscle memory" needed for algebra.
Not all free sites are vetted. Some are filled with typos or outdated methods that don't match the current curriculum. How to Use GDZ Like a Pro