Question

Решите задачу в коробке лежат 25 красных и синих шаров, причем красных на 13 меньше чем синих. Сколько красных шаров в коробке? Срочно!!!

Answer 1

Пусть х - красных шаров, тогда (х+13) синих шаров. Всего шаров 25.
Составляем уравнение х+(х+13)=25
х+х+13=25
2х=25-13
2х=12
х=12:2
х=6 красных шаров

Answer 2

Problem Analysis

We are given a box containing 25 red and blue balls, with the number of red balls being 13 less than the number of blue balls. We need to determine the number of red balls in the box.

Solution

Let's assume the number of blue balls in the box is x. According to the problem statement, the number of red balls is 13 less than the number of blue balls. Therefore, the number of red balls can be represented as x - 13.

We know that the total number of balls in the box is 25. So, we can write the equation:

Number of red balls + Number of blue balls = Total number of balls

Substituting the values, we get:

(x - 13) + x = 25

Simplifying the equation, we have:

2x - 13 = 25

Adding 13 to both sides of the equation, we get:

2x = 38

Dividing both sides of the equation by 2, we get:

x = 19

Therefore, the number of blue balls in the box is 19.

To find the number of red balls, we substitute the value of x into the equation:

Number of red balls = x - 13 = 19 - 13 = 6

So, there are 6 red balls in the box.

Answer

There are 6 red balls in the box.