Answer:
I say that the answer is A, B, and C. I'm not positive but I think that is the answer.
Step-by-step explanation:
Tell me if I'm wrong it might just be B and C.
4 only has three factors 1,2,4. 4 times 1 and 2 times . No other possible combinations making Adam wrong.
Well, 4+1=5, so we need to first find:

Ivan gets

Tanya gets

Step 1. Simplify 10/3b to 10b/3
12/5(10b/3 + 15/4)
Step 2. Distribute
8b + 9
(I'll assume that the blank spaces are PLUS signs ( + ),
as they usually are on Brainly.)
The mystery complex number is (5 - i) .
(3 + 2i) x (5 - i) = (17 + 7i)
FOIL it out and you'll see it.