Finding a specific version of a 2007 "GDZ" (Ready Homework Solutions) for Russian language from the Prosveshcheniye publishing house can be tricky because these books are often recycled or discarded.
While there isn't a single "universal" GDZ, the most common textbooks for 2007 from Prosveshcheniye included authors like (5-7th grades) and Trostentsova (8-9th grades). Where to find a paper copy: gdz po russkomu za 2007 moskva prosveshhenie
(e.g., Baranov, Ladyzhenskaya, or Trostentsova) will help narrow down the exact physical edition. Finding a specific version of a 2007 "GDZ"
Older public libraries or school libraries may still have "Methodological Recommendations" for teachers, which often contain the answer keys. Digital Alternatives (Printable): gdz po russkomu za 2007 moskva prosveshhenie
Sites like 5iz5 or Webmath host archives for Trostentsova and Ladyzhenskaya textbooks from that era.