Platforms like the Russian State Library (NEB) allow you to view the bibliographic details and sometimes digitized excerpts of the manual.
Older editions are often sold on Ozon or second-hand book sites, where you might find a copy that includes the answer key in the appendix. Key 8th Grade Topics to Master Platforms like the Russian State Library (NEB) allow
Use sites like YaClass or InternetUrok to find similar problems. They provide step-by-step theory that matches the tasks in Sofronov's manual. Platforms like the Russian State Library (NEB) allow