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西尔米奥奈
36人订阅《时代英语报》, 30人订阅《小学生数学报》,36+30-45=21(人)两种报都订的同学有21人
岚岛全屋定制
两种报都订的同学有21人
烂Pandade
45x(五分之四一三分之二)=6人
山东指纹锁
5 How many months have you ordered the milk/newspaper 6 I have ordered 3 month (for the newspaper/milk)7 I advise you not to read/buy that is very I advise you to buy/read this
36*(1-8/15)=14km 8.9/(5/8+9/16-1)=48人
30人同时订了两种报纸
(45乘4/5)-(45乘2/3)
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