Question

На двух книжных полках 75 книг.На первой полке на 9 книг больше,чем на второй полке.Сколько книг на второй полке?

Answer 1

У нас получается уравнение:
х+х+9=75
2х=75-9
2х=66
х=66:2
х=33

Answer 2

33 на первой полке и 42 на второй полке

Answer 3

Solution:

Let's denote the number of books on the second shelf as x. According to the given information, the number of books on the first shelf is 9 more than the number on the second shelf. Therefore, the number of books on the first shelf can be represented as x + 9.

We can now set up an equation to solve for x:

x + (x + 9) = 75

Solving for x:

2x + 9 = 75

2x = 75 - 9

2x = 66

x = 66 / 2

x = 33

Answer:

The number of books on the second shelf is 33.