16?8?9=72 8?4?9=36 9?3?6=18 13?5?8=64 7?3?4=49 28?7?5=7

Question

16?8?9=72
8?4?9=36
9?3?6=18
13?5?8=64
7?3?4=49
28?7?5=7

Comments

банально

Answer 1

(16-8)*9=8*9=72
(8-4)*9=4*9=36
9:3*6=3*6=18
(13-5)*8=8*8=64
7*(3+4)=7*7=49
(28+7):5=35:5=7

Answer 2

(16-8)*9=72
(8-4)*9=36
9+3+6=18
(13-5)*8=64
7*(3+4)=49