When I first encountered the Level 2 math puzzle "28 + 15 - 75 = ?", it initially seemed tricky because the subtraction component reduces the result to a negative number. Approaching it step by step helped clarify the correct answer. First, I added 28 and 15, which gave me 43. Then, subtracting 75 from 43 led to -32. This exercise reminded me how important it is to focus on each operation separately rather than trying to solve it all at once. Using a stylus pen on a tablet made it easier to write down each step and visually track my calculations, which reduced errors. It's a helpful tool for those who prefer digital note-taking or practicing math problems interactively. Also, puzzles like this one help strengthen basic arithmetic skills and build confidence in handling negative numbers, which are common in more advanced math topics. For anyone trying similar puzzles, I suggest writing down intermediate results clearly and double-checking each step before concluding your answer. This approach can prevent simple mistakes and make math challenges more enjoyable. Finally, engaging with such puzzles regularly can improve mental calculation speed and accuracy over time.