You have the following expression:
(37) + (-2) + (-65) + (-8)
eliminate parenthesis with the required change of signs:
37 - 2 - 65 - 8
sum negative numbers
37 - 75
simplify: rest the numbers and put the sign of the higher number:
-38
Then, you have:
(37) + (-2) + (-65) + (-8) = -38
