Video Crash Courses
Want to watch animated videos and solve interactive exercises about the removing numbers in front of x?
Click here to try the Video Crash Course called “Linear Equations”!
You have now learned how to move a term from one side of an equation to another. But what can you do when you are left with a number in front of ? You will learn what to do here.
It is important to remember that multiplication and division are inverse operations. What multiplication does, division can undo, and vice versa.
Rule
When you have a number multiplied by , you need to divide both sides of the equation by that number to get on its own.
When you divide in an equation, you need to divide both sides of the equation by the same number. Here is a way to do it that will make it easy.
Rule
Example 1
Solve for .
Example 2
Solve for .