Answer:
0
Explanation:
-6-9= -15+6= -9+3= -6 -(-6)= 0
(notice that in the part where it says -(-6) there are two negatives and a negative times a negative gives you a positive so it will be +6)
-6-9+6+3-(-6)
-15+6+3-(-6)
-9+3-(-6)
-6-(-6)
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