Nevermind I saw what I did wrong... fractions is stupidly difficult, so much messing around is needed to simple add or subtract a damn fraction...
Don't worry about it. There are any number of students out there who have a hard time with fractions. It seems to be a concept that is difficult to learn.
Why don't you post your solution? That way someone who is also having troubles can take a look at it.
anyway, my solution:
This is what it's like for every question I have like this, I need to write down all the steps otherwise I just lose track of what is what, very annoying