X=4/3
4 x 4 x 3 x 3 x 3 x 3 x 3 = 3888
If 3 times x = 4 then x = 4/3 or 1.3333 (3 recurring)
X=4/3
18 x 4 x 3 = 216
4 x 3 x 6 = 72
7 x 3 x 4 = 84
6 x 3 x 4 = 72
2 x 3 x 4 = 24
4 x 3 x 3
4 x 16 x 3 = 192
The answer is 25. In the sum 3 x 3 + 4 x 4... you perform the multiplication first.
4 x 3=12