# Module 3 expressions and equations

To solve an equation, one must use methods such as algebra and substitution to find the values of the variables.

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## Module 3: Expressions and Equations

Expressions can be evaluated simply by plugging in a given value and performing the necessary operations to determine a result.

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## MATH G7: Expressions and Equations

An equation is an equation that holds true for all values, while an expression is an equation with no equal sign.

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## 7th Grade

Understanding the differences between equations and expressions allows one to use formulae accurately in mathematics and other fields.
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## Course: Grade 7 Module 3: Expressions and Equations

An equation often contains at least two variables, or unknowns, while an expression usually only has one.

Explain math equations

Math equations are a way of representing mathematical relationships between variables in a concise and easy-to-understand way.

Solve math equation

To solve a math equation, you need to find the value of the variable that makes the equation true.

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## Module 3: Expressions and Equations

An equation and expression are two different mathematical entities, though they both contain operations.

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