M. : ACT, Astrel, 2010. — 128 s. This manual is designed for independent preparation of students for GIA . It includes tasks that include the topics "Equations", "Systems of Equations", as well as text tasks. Each section is preceded by a brief theoretical material and contains a large number of examples of problem solving. The number of tasks in the topic varies depending on its complexity, as well as the number of tasks in the GIA devoted to this topic. Each topic includes exercises that allow students to independently repeat and consolidate what they have learned and successfully cope with GIA tasks. To check whether the material has been learned, the answers to all the exercises are given at the end of the book.