Answer:
-3.75
Step-by-step explanation:
BIDMAS = BRACKETS, INDICIES, DIVISION, MULTIPICATION, ADDITION, SUBTRACTION
13/-4 = -3.25
--1/-6 = (two negatives equals a positive so its 1/-6) -0.1666...
-2/3 = -0.666...
-0.666... + -3.25 - - 0.1666...
= -3.75
