Question

На двух полках количество книг сначала было одинаковым.После того как на этидве полке стало поставили ещё 60 книг, на одной полке стало 65 книг, а на другой 55книг.По скольку книг было на каждой полке сначала? Пожалуйста напишите срочно!!!

Answer 1

65+55=120 книг стало на двух полках
120-60=60 книг было на двух сначала
60:2=30 книг было на каждой вначале

Answer 2

Solution:

Let's solve the problem step by step.

1. Initial Number of Books on Each Shelf: - Let's assume the initial number of books on each shelf is represented by the variable x.

2. After Adding 60 Books: - After adding 60 books to the two shelves, one shelf has 65 books and the other has 55 books. - This can be represented by the equation: (x + 60) + (x + 60) = 65 + 55.

3. Solving for x: - We can solve for x using the equation from step 2.

4. Calculation: - Let's calculate the initial number of books on each shelf.

Calculation:

Using the equation (x + 60) + (x + 60) = 65 + 55, we can solve for x: - 2x + 120 = 120 - 2x = 120 - 120 - 2x = 0 - x = 0 / 2 - x = 0

So, the initial number of books on each shelf was 0.

Answer:

The initial number of books on each shelf was 0.