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Problems with inequalities?

Solving an Inequality

An inequality is similar to an equation. There are two expressions separated by a symbol that indicates how one expression is related to the other. In an equation such as 7x = 49, the = sign indicates that the expressions are equivalent. In an inequality, such as 7x > 49, the > sign indicates that the left side is larger than the right side.

To solve the inequality 7x > 49, we follow the same rules that we did for equations. In this case, divide both sides by 7 so that x > 7. This means that x is a value and it is always larger than 7, and never equal to or less than 7.

The "less than" symbol (<) may also be seen in inequalities.

These sites will explain what inequalities are:

    Quick Math

    Quick good guide - SOSmath

    Math.com

    Here are the inequality notes from school

 
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Last modified: April 05, 2001