Equations and Inequalities

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What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing one or more variables.

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What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions, showing that one is greater than, less than, or not equal to the other.

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x = 35.

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x = 2.

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Back

Distribute 7 to both terms inside the parentheses.

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Back

First, add 2 to both sides: 3x > -21, then divide by 3: x > -7.

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What does an open dot on a number line represent?

Back

An open dot indicates that the number is not included in the solution set.

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What does a closed dot on a number line represent?

Back

A closed dot indicates that the number is included in the solution set.

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x = 3.

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The solution set includes all numbers less than -7.