Be cautious of websites that require your phone number or ask you to install "download managers" to access the PDF, as these are often sources of malware.
If you need the textbook or its official teacher's guide (which contains the answers), check the official educational resources for the Republic of Tatarstan: Be cautious of websites that require your phone
Most students and parents use online platforms rather than downloading PDF files, as these sites allow you to view specific exercises directly: Be cautious of websites that require your phone
Paste it into a search engine with the authors' names (e.g., "Ахмадулина 6 класс упражнение [номер]" ). Be cautious of websites that require your phone
To find specific answers more quickly, try searching for the exact task description in Russian: Copy a unique sentence from the exercise.