# What is the Real Difference Between an Equation And an Expression?

If you are wondering what the difference between an equation and an expression is, this write-up will provide you with an insight into the matter. Here, you will find a comparison that will make it easier for you to understand the fundamental differences between these two algebraic concepts.

Omkar Phatak

Last Updated: Jan 23, 2019

How Does an Equation Differ From an Expression, in Algebra?

A variable is an unknown quantity that needs to be determined through calculation. The most celebrated alphabet used for this purpose is 'x' but any other could be used as well. A variable is a useful concept that helps you in formulating a mathematical problem.

Examples

The example 'x + 3' is an expression, as it only says 'three more than a number'. On the other hand, 'x + 3 = 0' is an equation as it says 'three plus a number equals to zero'.