If 9 is subtracted from the sum of 12 and -17?

-if 9 is subtracted by the sum of 12 and -17..

meaning (12 + (-17)) - 9 is would equal -14

(12+(-17))=-5

(-5) - 9 = -14-14 because you have -5 with 12 and -17 minus 9 is -5
(12-17) - 9
-14