Relying on GDZ just to copy answers can hinder your progress. Instead, treat platforms like GDZ.ru or Obozrevatel as personal tutors:
Challenges that go beyond basic school curriculum to develop critical thinking. gdz po algebre za klass galitskii
You can access the 2019 edition of the Sbornik Zadach through community archives like VK or view PDF versions on Scribd . Relying on GDZ just to copy answers can hinder your progress