Common 5th-grade math textbooks in Russia are typically authored by well-known pedagogical figures such as Vilenkin , Dorofeev , Nikolsky, or [Merzlyak]. It is possible that "Vera Mikhailovna Pashina" refers to a local teacher who has authored specific internal school materials or a less common supplementary workbook that has not been digitized by major GDZ portals.

: Solving simple linear equations and text-based movement problems. How to Find Your Specific Solutions

: Many workbooks and textbooks contain an "Answers" (Ответы) section at the end for self-checking.

If you can provide the of the book or photo of the cover , I can try to help you solve specific problems from it.