Anna: Hello, is that you, Mary? How are you? Why yesterday did not go to class? Mary: Hi Anna. I felt bad. And couldn't even get up. A: What happened to you? M: I don't know. I haven't went to the doctor. I had a high temperature. A: can you go to institute today? M: I'm Afraid not. This morning I visit the doctor. I feel that I have a few days to stay in bed. Really sorry we have to miss lectures. A: Nothing to worry about. Don't have to come if you don't feel. Of course, you need to stay in bed. If you want to borrow my notes. Can I visit you today? M: Of Course. Come immediately after lessons. A: I'm Sorry, but after school I have to go to the library to get some books for discussion. M: don't go to the library. I have many interesting books. You can take any of them. A: Well. I can come to you on the 41 tram? M: Yes. But don't come on the tram. Near my house opened a new metro station and takes me all of fifteen minutes to reach the Institute by metro. A: Very well, but I have to go to College. Yet. M: see you Then. Don't forget to bring me your notes. Give me a call if you can't come.
1) 2 цел 2/5 : 5 цел 1/2 = 12/5 : 11/2 = 12/5 * 2/11 = 24/55
2) 3 цел 1/3 * 24/55 = 10/3 * 24/55 = (2*8)/(1*11) = 16/11 = 1 цел 5/11
Пояснения:
2 целых 2/5 = (2*5+2)/5 = 12/5
5 целых 1/2 = (5*2+1)/2 = 11/2
3 целых 1/3 = (3*3+1)/3 = 10/3