October 15, 2008

This resource has been contributed by Winpossible, and can also be accessed on their website by clicking here - Adding/subtracting same number on both side of an equation.

This mini-lesson explains how to solve an equation by adding or subtracting the same number to/from both sides of the equation. The basic rule is: in order to solve an equation, you use the additive inverse to isolate the term. Let's look at an example:

This mini-lesson explains how to solve an equation by adding or subtracting the same number to/from both sides of the equation. The basic rule is: in order to solve an equation, you use the additive inverse to isolate the term. Let's look at an example:

x – 5 = 8

To solve an equation like this, we have to see how we can get x by itself on the left side. This is where adding or subtracting the same number on both sides of the equation comes into play, and helps us solve the equation.

This FREE mini-lesson is a part of Winpossible's online course that covers all topics within Algebra I. Click on the video below to go through it. If you like it, you can buy our online course in Algebra I by clicking here.

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