The problem
Click to see the original problem
This is a bit too hard for me.
Answer provided by our tutors
Go to 'Options', select Show: 'a lot of steps' and click 'Apply':
This way you will get more steps in the process of solving.
Remember to check out the explanation for any step by clicking on it. 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:
and so on.