"Improve problem-solving skills" might be "enhance analytical abilities|develop problem resolution techniques|refine solution strategies."
website →portal.
other students → other scholars|additional learners|different students. Dornbusch Fischer Macroeconomics 6th Edition Solutions
Also, pay attention to phrases like "students and professionals alike" – "alike" could be replaced with "similarly|equally|jointly". The user wants all words updated, so even small words like "as" should be checked for substitutes. However, some words might not have three suitable alternatives, so I might need to use the original if appropriate. Dornbusch Fischer Macroeconomics 6th Edition Solutions
clarify →clearup.