TASK DEFINITION: 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.
PROBLEM: 2759 - 7972 - 7615 + 151

SOLUTION: 18195

PROBLEM: 9467 + 7102 - 1964

SOLUTION: 4329

PROBLEM: 9166 + 9932 - 1924 + 696

SOLUTION:
462