Where is the rule stated that you must use the distributive property?
Can’t you add 9 and 3 together? That resolves what is inside the parentheses. Then you go on to division and multiplication.
Purplemath.com is just one source.
Someone also posted that if you go to algebra sites and enter the problem exactly as presented, the answer is 2.
If you change the problem to 48/2(9+3), the answer is 288. If that was indeed the problem, the answer is clearly 288, but that is not the problem.