Question

Задача:Андрей задумал четырёхзначное число ,которое сначала увеличил на 2222,а затем -уменьшил на 78.В результате он получил 4680.Какое число задумал Андрей?

Answer 1

Ответ:2546
2546+2222-78=4680

Answer 2

Problem Analysis

Andrey started with a four-digit number, increased it by 2222, and then decreased it by 78. The result was 4680. We need to find the original number that Andrey had in mind.

Solution

Let's assume the original number that Andrey had in mind is represented by the variable `x`.

According to the problem statement, the following equation can be formed: x + 2222 - 78 = 4680

To find the value of `x`, we can solve this equation.

Calculation

x + 2222 - 78 = 4680

Simplifying the equation: x + 2144 = 4680

Subtracting 2144 from both sides of the equation: x = 4680 - 2144 x = 2536

Answer

The number that Andrey had in mind is 2536.