Два резистора 20 и 60 Ом соединили параллельно и подключили к источнику постоянного напряжения 15В. Найдите силу тока в цепи.

Решить пример:
-9,6*5/16-(-3.4)^2+9,06
Прошу расписать по действиям. 

-Are there any factories or industrial areas where you live? - Unfortunately, there was one garment factory and confectionery factories and grain processing enterprises. Previously, our city was famous for the production of tractors. There was also dairy factory and a furniture factory. Is there a lot of pollution there? - Yes, our city is very polluted. The reason for that is the huge number of cars, and the lack of conscience of citizens. What museums, galleries, or theatres are close to your house? Is there any famous architecture near your house? - You know that in our city there are few museums and galleries. National History Museum, the Art Gallery. VV Tikhonov. In the central square there is a majestic grandfather Lenin, perhaps, is the most famous monument in the city. What do you usually do when you meet your friend? - We have fun, walk, go to each other's houses, we go to a cafe and cinema. How many people live in our city? -In our city live 146,000 people. Is there a lot of crime in our area? -Frankly speaking, I can not answer this question. Have you ever had something stolen from you or been the victim of a crime? - Fortunately, no. I try to be careful and cautious. Do you have relatives who live in the another country? -- Yes, and I often visited them on a visit. Have you ever traveled to another country. - No. Unfortunately, I do not have a passport. But when I get it, be sure I will go. Are there many farms near your house? -No, in our town there is only orchards and gardens. While many people have the cattle Do you enjoy nature? -Yes! I love the world around us! How do you like to relax? -I love spending time with family and people close to me, going to the cinema, cafe. So relax. Of course, I love to sleep. Ошибки.

Представьте выражение a-3,2-b

В виде суммы выражений: (a+n) и (m -b),где m и n некоторые числа. Не спрашивайте у меня,что это такое..сама не знает..это из Ершова 6 класс..если кто-то знает..помогите пожааалуйста)

Cочинение можно ли считать рассказ а п чехова "тоска" важным для нашего времени