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.
Makarychev’s textbook is famous for its . The problems aren't just random; they build on each other. If you simply copy "Exercise 145," you’ll be completely lost by "Exercise 150."
The biggest mistake is copying the answer before you even try the problem. Instead, treat the GDZ like a teacher standing behind you.