Fix the AI's math mistake and explain why 練習問題3.7 + 2.5 = ? Learning path / Course list / Math Test Grade 7 Prep Previous and next lessons in this course Previous lesson: Math Test Grade 7: 5-question challenge Next lesson: Math Test Grade 7: step up Math Test Grade 7 Prep: related lessons Math Test Grade 7: step up Math Test Grade 7: 5-question challenge Fix the AI's math mistake and explain why