Equality and equation basics
Recognize equality-preserving transformations and check solutions in the original equation.
Meaning
An equality states that two expressions have the same value. An equation with variables sets a condition whose satisfying values are sought. Solutions make it true; an identity holds for every value in a specified domain.
Example
Practice for this concept
Scope and references
Topics
Meaning of equality, properties of equations, equations versus identities, solutions and checking
Learning goal
Recognize equality-preserving transformations and check solutions in the original equation.
Helpful background
Read an equals sign as equality of two values and check with simple operations.
Equations and equality
These ordinary choice questions provide limited practice in this concept. They do not establish independent solution, full-concept performance, or mastery.