The answer is 2. The problem looks like it has more than one answer because are treating it as a calculation in a string form instead of as a fraction. So people are calculating it thus:
48/2 = 24
24 x (9+3) = 24 x 12 = 288.
This is incorrect. This problem is not in fact an equation, it is a fraction. It should be treated like this:
48

2(9+3)
or
48

2 x 12
or
48

24
or
2

1
which of course is just 2.
