The answer is 66.
Explanation
4×3 = 12,
6×9 = 54.
54+12 = 66
To do this the first box on the left corner it says three and four so you multiply them. Then there’s a second box with six and nine. You have to multiply 6 and 9 together. After you get those answers you add that answer with the answer from three times four.
Hope I helped you!
:)
