easy as pie — a baked food having a filling of fruit, meat, pudding, etc., prepared in a pastry-lined pan or dish and often topped with a pastry crust: apple pie; meat pie.
effortless — requiring or involving no effort; displaying no signs of effort; easy: an effortless writing style.
facile — moving, acting, working, proceeding, etc., with ease, sometimes with superficiality: facile fingers; a facile mind.
intelligible — capable of being understood; comprehensible; clear: an intelligible response.
lucid — easily understood; completely intelligible or comprehensible: a lucid explanation.
manageable — that can be managed; governable; tractable; contrivable.
mild — amiably gentle or temperate in feeling or behavior toward others.
no problem — any question or matter involving doubt, uncertainty, or difficulty.
no sweat — Informal. (of clothes) made to be worn for exercise, sports, or other physical activity. made of the absorbent fabric used for such clothes: sweat dresses. of, for, or associated with such clothes: the sweat look in sportswear.
piece of cake — a sweet, baked, breadlike food, made with or without shortening, and usually containing flour, sugar, baking powder or soda, eggs, and liquid flavoring.
self-explanatory — explaining itself; needing no explanation; obvious.
uninvolved — very intricate or complex: an involved reply.
