Backtracking to solve for x

Given the equation on the right we can do exactly what Stephen did and find out the value of "x".

We call this backtracking.

Look at the animation on the right and lets see how it works.

Click to see a larger image of the animation on the right.
See if you can solve this equation on your own in a similar way to the one above.
Solution
Continue with a different approach to solving equations.