Question

Задачи на уравнивание- номер 362 на трёх полках 47 книг. На средней полке на 4 книги меньше, чем на верхней, и на 2 книги больше чем на нижний полке сколько книг на верхней полке. РЕБЯТ СПАСИТЕ МЕНЯ ПОЖАЛУЙСТА!!!!!

Answer 1

На средней полке х книг
на верхней полке х+4
на нижней полке х-2
всего 47
составим уравнение
х+х+4+х-2=47
3х=47-4+2
3х=45
х=45:3
х=15 книг на средней полке
15+4=19 книг на верхней полке
=============

Answer 2

Problem Analysis

We are given three shelves with a total of 47 books. The middle shelf has 4 fewer books than the top shelf, and 2 more books than the bottom shelf. We need to determine the number of books on the top shelf.

Solution

Let's assume the number of books on the top shelf is x.

According to the given information: - The middle shelf has 4 fewer books than the top shelf, so the number of books on the middle shelf is x - 4. - The middle shelf has 2 more books than the bottom shelf, so the number of books on the bottom shelf is x - 4 - 2.

The total number of books on all three shelves is 47, so we can write the equation:

x + (x - 4) + (x - 4 - 2) = 47

Simplifying the equation:

3x - 10 = 47

Adding 10 to both sides:

3x = 57

Dividing both sides by 3:

x = 19

Therefore, there are 19 books on the top shelf.

Answer

There are 19 books on the top shelf.