Actually I don't think it's a valid equation. What's 48/2*12? Is it 48/(2*12) or (48/2)*12?
The way it's written, it would be 48/2 and then *12. Order of operations; since there are no brackets, you have to go left to right for the multiplication/division. Technically. it's neither 48/(2*12) or (48/2)*12 because simply adding brackets changes the level of priority of each calculation.