The platform you are looking for is most likely , a comprehensive Algerian educational resource that provides a specific "D3AM" (3rd Year Middle School) section. This site is widely used for downloading official school book solutions (حلول تمارين الكتاب المدرسي) and exam topics for various subjects, including Mathematics . Key Features of DzExams (D3AM)

: Many of its resources can be downloaded as PDF files for study without an internet connection.

Eddirasa : Provides direct download links for complete 3AM math solutions.