((3 + 4) * 9 - 2 * 3)?
A: It is as though the expression were fully parenthesized as: (((3 + 4) * 9) - (2 * 3)) = 57
(((3 + 4) * 9) - (2 * 3)) = 57
Q: Why this parenthesization, and not some other one, like: ((3 + 4) * (9 - (2 * 3))) = 21 ?
((3 + 4) * (9 - (2 * 3))) = 21 ?
A: