Question

Запишите и решите уравнение 1 пачка было 2х, стало 2х-17. 2 пачка было х, стало х+34. Известно, что количество тетрадей, получившиеся в каждой пачке, было одинаковым. Определиться количество тетрадей, которое было во второй пачке. НУЖНО СРОЧНО 36 БАЛЛОВ.

Answer 1

В 1 пачке было 2х тетрадей, стало (2х-17) тетрадей.
Во 2 пачке было х т., стало (х+34) т.
Т.к количество тетрадей, получившиеся в каждой пачке, стало одинаковым, то составим уравнение:
2х - 17 = х + 34
2х - 17 - х - 34 = 0
х - 51 = 0
х = 51
Во второй пачке было 51 тетради.
ОТВЕТ: 51 тетради

Answer 2

I can help you with solving a linear equation with two variables. Here is a detailed solution for your problem.

Let x be the number of notebooks in the second pack before the exchange, and y be the number of notebooks in each pack after the exchange. Then we can write the following system of equations:

$$ \begin{cases} 2x - 17 = y \\ x + 34 = y \end{cases} $$

To solve this system, we can use the substitution method. We can solve the second equation for y and get:

$$ y = x + 34 $$

Then we can substitute this expression for y in the first equation and get:

$$ 2x - 17 = x + 34 $$

Solving for x, we get:

$$ x = 51 $$

This means that the second pack had 51 notebooks before the exchange. To find the value of y, we can plug in x = 51 in either equation. For example, using the second equation, we get:

$$ y = 51 + 34 = 85 $$

This means that each pack had 85 notebooks after the exchange. Therefore, the answer is 51.

If you want to learn more about how to solve linear equations with two variables, you can watch some videos , , or . You can also read some articles , , , or . You can also practice some problems . I hope this helps. Good luck with your homework!how to solve a linear equation with two variables