https://www.gregmat.com/quizzes/quiz/prepswift-simplifying-algebraic-expressions-2 (Question 5)
Hi Greg, hope you are well. The answer I got was -2 and -9. But the correct answers you have considered are +2 and +9 which doest make sense at all. Altghough, you have provided an explantion at the bottom but it doest satisfy me at leaset. I am saying this because if I see such a question in the real GRE test, I will just put the answer I get after my calculations. Could you please share any other standards that can help me navigate through such situation leading me to the right answer. Thanks