In an algebra study or analysis, we can encounter many families of equations that can be considered, or similar or different groups of equations that share common features, in questions, exams. What interests us here is the family of univariate linear equations, a study that lays the foundation for understanding its more advanced diversity. In addition to solving linear equations, we will use the skills we have developed to solve a particular variable in the formula, a common practice in science, business, industry and research.
