Question

Реши задачу уравнением В трёх книжных шкафах 545 книг.В первом шкафу книг в 5 раз больше,чем во втором,а в третьем 143 книги.Сколько книг в первом шкафу?

Answer 1

1) х+5х+143=545     6х=545-143     6х=402     х=402:6    х=67    2) 67*5=335  3)  335+143 +67= 545

Answer 2

545-143=402(книги) - в двух первых шкафах
1х - книги во втором шкафу
5х - книги в первом шкафу
402/(5+1)=х
х=67
67*5=335(книг)
Ответ: 335 книг в первом шкафу.

Answer 3

Problem Solving: Number of Books in the First Bookshelf

To solve this problem, we can set up an equation based on the given information.

Let's assume the number of books in the second bookshelf is x.

According to the problem, the number of books in the first bookshelf is 5 times the number of books in the second bookshelf. So, the number of books in the first bookshelf is 5x.

The number of books in the third bookshelf is given as 143.

Now, we can set up the equation:

x + 5x + 143 = 545

Simplifying the equation:

6x + 143 = 545

Subtracting 143 from both sides:

6x = 402

Dividing both sides by 6:

x = 67

Therefore, the number of books in the first bookshelf is 5x = 5 * 67 = 335.

So, there are 335 books in the first bookshelf.