: It is defined as an equality that includes variables.
: The paragraph outlines the systematic process of finding all possible roots or proving that no roots exist.
: A number that, when substituted for the variable, makes the equality true is called a root or a solution.
“It is the first time students are asked to think algebraically, recognizing the difference between an expression and an equation.” YouTube · Daniel Edey · 6 years ago Алгебра 7-9 класс Бевз | PDF - Scribd
In G. P. Bevz's 7th-grade algebra textbook, Paragraph 13 typically focuses on . This section is foundational, introducing the concept of mathematical equality containing unknown variables (often ) and the methods used to solve them. Key Features of Paragraph 13