Another reliable option for step-by-step answers is Gitem.me , which links to the basic level textbook and workbook. :
If you need the actual textbook rather than just the answers, you can find the electronic version at Litres.ru or via the Prosveshchenie Media Library . Another reliable option for step-by-step answers is Gitem
: When searching for "download" files (PDF/DJVU), be cautious of sites requiring phone number verification or "subscriptions," as these are often unreliable compared to established online GDZ databases. Another reliable option for step-by-step answers is Gitem
: General properties and their roles in nature and industry. Types of GDZ for this Course Another reliable option for step-by-step answers is Gitem