National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Adding and Subtracting Inequaliites
"Dr. Math" provides an explanation on remembering when inequalities may be added and subtracted. The explanation is in response to a question submitted by a student.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Inequalities
"Dr. Math" responds to a student question about solving inequalities. Within the response, a list of the properties of inequalities is provided. Site by Math Forum