93 + 4 = ()44 + 50 = ()55 - 40 = ()32 + 19 = ()36 + 15 = ()39 + 10 = ()3 + 20 = ()26 - 7 = ()37 + 54 = ()50 - 37 = ()4 + 9 = ()33 - 31 = ()79 - 36 = ()74 - 40 = ()94 - 70 = ()74 - 63 = ()30 + 33 = ()7...好乱呀