is a renowned author of mathematics textbooks, not Russian language books. If you are searching for a 6th-grade Russian language "reshebnik" (solution manual), you are likely using a textbook by one of the following standard authors: Popular 6th-Grade Russian Language Textbooks

: Used in advanced or specific educational tracks.

: A modern alternative focused on practical application. Where to Find Online Solutions (Reshebniks)

: Offers a comprehensive collection of answers for all major Russian language textbooks.

: Specifically useful for students following the Belarusian curriculum. Clarification on Vilenkin

If you specifically need help with a book by , you are likely looking for his Mathematics 6th Grade textbook. Solutions for Vilenkin’s math problems are extremely popular and can also be found on the sites mentioned above (e.g., GDZ.ru for Vilenkin Math).