Question 133920
Let's assigned "x" to the unknown number.
So,

4 (x+5)/3 = 16
x+5 = 48/4
x = 12-5
x = 7 = unknown number

To check,
4 (7+5)/3 = 16

4 (12/3) = 16

4 * 4 = 16
16=16