What is a conditional equation?

1. The definition names an equation true for one or more values of the variable, but false for all other values, as conditional. 2. An equation true for every value is called an identity instead, and one false for every value is called a contradiction. 3. A conditional equation still contains a variable; it is simply not true for all possible values of it. _Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 2 "Solving Linear Equations and Inequalities", section 2.4 Use a General Strategy to Solve Linear Equations_