It’s a piece of cake.(朝飯前だ): Solving this puzzle is a piece of cake. (このパズルを解くのは朝飯前だ) - 試験に出る! 英単語検索辞書

It’s a piece of cake.(朝飯前だ): Solving this puzzle is a piece of cake. (このパズルを解くのは朝飯前だ)

Solving this puzzle is a piece of cake.