Well if you have a fraction like that you see whats on the top and whats on the bottom and then you look to see what you can simplify (get rid of) e.g.
First imagine the fraction in similar segmented fractions (if that is even grammatically correct)
Now work them out individually:
cannot be simplified so it remains the same.
Now combine them (put them back)
However even this can be simplified;
This seems a bit long-winded but once you get the hang of it, it becomes much quicker and easier. Now try yours.