Katie had 30 stickers. Katie gave 2/3 of the stickers to her sister. Of the amount left, she gave 2/5 to her friend. How many stickers does Katie have left for herself?

Thanks for the help!!! πŸ€—πŸ€—πŸ’–πŸ’πŸ’˜πŸ€—πŸ€—

If no one happens to be looking, repeating the post will do no good.

Then the repeated posts just waste time.