Answer:
Step-by-step explanation:
answer is attached below
8 is the correct answer ...
c + ab
The way an expression is written is the given you have presented to us.
The commutative law of addition would turn it around as
c + ab.
It just means change the order when adding. Not all systems allow this. It matters which way you put it in some systems.
I am not too sure but I think the answer would be 6