Help Getting Abs 14 Years Old?

i weight 47 Kilos and im turing 14 in september if i did say 70 or 60 sit uos a day for 1 month or 2 would i have abs that actuly show i noe people say if u have to much fat it covers it but truth is im skinny so back to the point(not that skinny) will i have abs i walk from skool and to skool every day up a hill and down it so i do excercise plus sport in skool