Uploaded May 2026 | Updated September 2026, 2 weeks ago
Solving inequalities is part of a complete math placement test prep course at MathHelp.com:
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This lesson covers solving inequalities. Students learn that when solving an inequality, such as --3x is less than 12, the goal is the same as when solving an equation: to get the variable by itself on one side. Note that when multiplying or dividing both sides of an inequality by a negative number, the direction of the inequality sign must be switched. For example, to solve --3x is less than 12, divide both sides by --3, to get x is greater than -4. And when graphing an inequality on a number line, less than or greater than means an open dot, and less than or equal to or greater than or equal to means a closed dot.
MathHelp.com also offers custom test prep courses for the ALEKS, TSI, ACCUPLACER, PERT, and many more.
Solving inequalities is part of a complete math placement test prep course at MathHelp.com:
mathhelp.com
This lesson covers solving inequalities. Students learn that when solving an inequality, such as --3x is less than 12, the goal is the same as when solving an equation: to get the variable by itself on one side. Note that when multiplying or dividing both sides of an inequality by a negative number, the direction of the inequality sign must be switched. For example, to solve --3x is less than 12, divide both sides by --3, to get x is greater than -4. And when graphing an inequality on a number line, less than or greater than means an open dot, and less than or equal to or greater than or equal to means a closed dot.
MathHelp.com also offers custom test prep courses for the ALEKS, TSI, ACCUPLACER, PERT, and many more.
