Question

В коробке было красных карандашей в 2 раза больше,чем синих.Когда в коробку положили еще 6 синих карандашей,то их стало столько же,сколько и красных.Сколько синих карандашей стало в коробке? Помоги пожалуйста решить!!! Дам 20 баллов :3

Answer 1

Двенадцать было синих

Answer 2

Пусть синих х шт, тогда красных 2х. По условию задачи
Х+6 = 2х
6 = 2х-х
Х = 6 синих карандашей было в коробке сначала

6+6 = 12 синих карандашей стало

Answer 3

Problem Analysis

Let's break down the problem step by step:

1. Initially, the number of red pencils in the box is twice the number of blue pencils. 2. When 6 more blue pencils are added to the box, the number of blue pencils becomes equal to the number of red pencils.

We need to find the number of blue pencils in the box after the additional blue pencils are added.

Solution

Let's assume the initial number of blue pencils in the box is x. According to the problem, the number of red pencils is twice the number of blue pencils, so the initial number of red pencils is 2x.

After adding 6 more blue pencils, the number of blue pencils becomes x + 6. At the same time, the number of red pencils remains the same, which is 2x.

According to the problem, the number of blue pencils becomes equal to the number of red pencils after adding 6 more blue pencils. So we can set up the following equation:

x + 6 = 2x

Now we can solve this equation to find the value of x.

Solving the Equation

To solve the equation x + 6 = 2x, we can subtract x from both sides of the equation:

x + 6 - x = 2x - x

Simplifying the equation gives us:

6 = x

So the initial number of blue pencils in the box is 6.

Answer

Therefore, the number of blue pencils in the box after adding 6 more blue pencils is x + 6 = 6 + 6 = 12.

So there are 12 blue pencils in the box.

I hope this helps! Let me know if you have any further questions.