Following the rules of mathematics - 288
An equation should never be written this way. This is math and it should never be 'suggestive'.
48÷2(9+3) suggests that 2(9+3) is a combined calculation equaling 24, but when couple with the 48÷ in front, plays on the rules of mathematics, where multiplication and division have the same priority requiring you to calculate them in the order they appear, netting a result of 288.
To remove all suggestive reference, the equation should be written either of -
48÷(2(9+3)) = 2
48÷2*(9+3) = 288
Great post! But I failed the equation writer for including suggestion/ambiguity into a math equation.