In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

138 + 3973 - 6085 - 3324 + 6921 + 4411 + 1113 + 8310
-15181

5945 + 1046 + 9187 + 929
-5217

6605 - 8832 + 5526

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
9911

