easy math I can't solve it?

hye to all of you..

this entry I decided to write it because I suddenly remember that I helped my brother last week

did his math's homework..

most of it I can help him,

then it just happen, I totally lost what the question want..

so, with help my dad..finally the question had been answered..

"owhhh..that's easy..why I don't see that"

although my course related to maths, which usually hard question I can answer

but already forgot how to solve the easy one..

what to do.. (^_^)

picture from google

this is show how determine I was when I want to answer the question

actually it always happen to me.. did it also happen to you too??