To get more steps go to 'Option', select "a lot of steps" and click "Apply":

You will get more steps. This will give you more step-by-step solution.

Click on each step to get explanation. 

Please note that you cannot click on the very first expression, which is the original problem. Quite often, several transformations will be performed within the same step. Use the explanation navigation buttons to step through all of them:

Hope this clears thing up.