For those who want to study! There is writing in it, but it's in a condition that doesn't hinder learning. If you'd like to confirm the extent of the writing, please comment. "New Course 4STEP Mathematics 1+A" Edited by Suken Shuppan Price: 775 yen Answer Edition Price: 250 yen Mathematics I Revised Edition, Suken Shuppan Mathematics A Revised Edition, Suken Shuppan #SukenShuppanEditorialDepartment #Book #Mathematics/Education/Learning