The manual is a tool, not a crutch. Use it to understand the why behind the math, and you’ll find that when the actual test lands on your desk, you won’t need the manual at all.
If your answer is different, use the GDZ to find exactly which line your logic diverged. 3. Pre-Exam Self-Testing
Once you see what you missed, close the manual and finish the problem yourself. 2. Understanding the Makarychev Logic
Is it the opening of the brackets? Is it the signs?