Clear and easy to understand; an explanation or statement that is straightforward and unambiguous.
先生の説明はいつも明解で、初めての人でも理解できる。
The teacher's explanations are always clear, so even beginners can understand.
マニュアルが明解に書かれているので、操作は簡単だ。
Because the manual is written clearly, the operation is simple.
その本は概念を明解に示しているため、学習に役立つ。
That book presents the concepts clearly, so it's helpful for study.