Answer:
-67.2
Explanation:
Simplify the given expression (−3.5)(−3)(−6.4)
WE apply PEMDAS rule to simplify it
Lets start with parenthesis part
We multiply first two parenthesis
(−3.5)(−3)
Negative and negative becomes positive
(−3.5)(−3) is 10.5
Now we multiply it with -6.4. Positive times negative is negative.

