What has been the most difficult topic so far this year? Why? Do you understand it now?

What has been the most difficult topic so far this year? Well that is a great questions my difficult topic so far this year is a weighted averaged.

Why? because it have too many process to do a equation, also if you don´t read carefully you do not know how to do the process and you need to think very well and reflect before to do.

Do I understand now? not so much but i know if i will go to do a exercise i can understand much better then other guys.