Ответ:д) \(47 \cdot 24 - 39 = 1128 - 39 = \mathbf{1089}\);е) \(840 : 12 + 15 = 70 + 15 = \mathbf{85}\);ж) \(24 \cdot (327 - 276) = 24 \cdot 51 = \mathbf{1224}\);з) \((247 + 578) : 25 = 825 : 25 = \mathbf{33}\).