Solving Inequalities Using Addition and Subtraction

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What is an inequality?

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An inequality is a mathematical statement that compares two expressions using symbols such as <, >, ≤, or ≥.

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What does the symbol '>' mean in an inequality?

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The symbol '>' means 'greater than'. For example, a > 5 means 'a is greater than 5'.

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What does the symbol '<' mean in an inequality?

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The symbol '<' means 'less than'. For example, b < 3 means 'b is less than 3'.

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What does the symbol '≥' mean in an inequality?

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The symbol '≥' means 'greater than or equal to'. For example, c ≥ 4 means 'c is greater than or equal to 4'.

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What does the symbol '≤' mean in an inequality?

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The symbol '≤' means 'less than or equal to'. For example, d ≤ 2 means 'd is less than or equal to 2'.

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How do you isolate a variable in an equation?

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To isolate a variable, you perform the same operation on both sides of the equation to get the variable by itself.

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An open circle is used because the inequality does not include 3.

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