姐姐买白菜用去7元钱，买胡萝卜用去11元5角，姐姐买菜一共用去多少元钱？6~/T*`7_1]2F
算式：提示)\4X-G4f'y7F/i7p3\6~/T*`7_1]2F
答：姐姐买菜一共用去(@7f8a;y7h。6~/T*`7_1]2F