False
Due to the fact that the answer we got here is incorrect, this statement is false.
First, subtract -0.85 and -0.85, we get:
-1.7
Then, add -1.7 and -3.9, we get:
-5.6
It is important to note that the answer in the statement is written as “-8.15” which is incorrect.
The correct answer is -5.6
This is why the answer is
False
Hope this helps :)