3.Решите систему способом подстановки. {5x-3y=-1 {X+2y=5 2.графическим способом - №12552649

3.Решите систему способом подстановки.
{5x-3y=-1
{X+2y=5
2.графическим способом решите систему линейных уравнений.
{y-x=0
{x+y=4
1.из пар чисел (-2;1):(-1;2):(1;2) выберите решение системы линейных уровнений
- Предмет:
  Алгебра
- Автор:
  nicolás94ki
- 6 лет назад

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1. Is education in our country free
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Опираясь на текст:

EDUCATION IN RUSSIA

People in our country have the right for education. It is our Constitutional right. But it is not only a right, it is a duty, too. Every boy and every girl in Russia must go to school, that is, they must get a full secondary education. So, when they are 6 or 7 years old they begin to go to school. There are thousands of schools in Russia. There are schools of general education, where the pupils study Russian (or a native language ) , Literature, Mathematics, History, Biology, Music, Arts, Foreign Languages. There is also a number of specialised schools, where the pupils get deep knowledge of foreign languages, or Maths, or Physics.
After finishing 9 classes of secondary school young people can continue their education at different kinds of vocational or technical schools or colleges. They not only learn general subjects, but receive a speciality there. Having finished a secondary school, a technical school or a college young people can start working, or they may enter an Institute or a University. Professional training makes it easier to get higher education. As for high schools, there are a lot of them in our country. Some of them train teachers, others — doctors, engineers, architects, actors and so on. Many institutes have evening and extra-mural departments. That gives the students an opportunity to study at an institute without leaving
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