Classification of transformations, inequalities and their systems

This article is devoted to the study of inequalities. It also considers the classification of transformations of inequalities and their systems. An important aspect of the work is aware of the fact that in the study of the material line of inequalities students should not only master the ability to solve specific tasks, but also learn how to use logical means to justify decisions. The article will be useful for teachers of mathematics and algebra of the basic school.