Question

В)К трёх значному числу приписали цифру 2 сначала с лева потом с права получили два четырех значных числа сумма которых равна 5929 найдите трёх значное число. Г)к трёх значному числу приписали цифру 7 слева и справа получили два четырёхзначных числа сумма которых равна 8360 найдите прошу найдите трёх значное число ребя мне срочно надо ну помогите

Answer 1

2357+3572=5929
7123+1237=8360

Answer 2

Solution for the First Problem (В)

To solve the problem, we are given a three-digit number to which the digit 2 is added at the beginning and at the end, resulting in two four-digit numbers. The sum of these two four-digit numbers is 5929. We need to find the three-digit number.

Let's denote the three-digit number as ABC. When we add 2 at the beginning and at the end, we get the four-digit number 2ABC2. The other four-digit number is ABC2.

The sum of these two four-digit numbers is 5929, so we have the equation: 2ABC2 + ABC2 = 5929

Solving this equation will give us the value of the three-digit number ABC.

Calculation

Using the given equation, we can solve for the three-digit number ABC:

2ABC2 + ABC2 = 5929

3ABC4 = 5929

Now, we can find the value of ABC by solving for ABC.

Result

The three-digit number is 341.

Solution for the Second Problem (Г)

In this problem, we are given a three-digit number to which the digit 7 is added at the beginning and at the end, resulting in two four-digit numbers. The sum of these two four-digit numbers is 8360. We need to find the three-digit number.

Let's denote the three-digit number as XYZ. When we add 7 at the beginning and at the end, we get the four-digit number 7XYZ7. The other four-digit number is XYZ7.

The sum of these two four-digit numbers is 8360, so we have the equation: 7XYZ7 + XYZ7 = 8360

Solving this equation will give us the value of the three-digit number XYZ.

Calculation

Using the given equation, we can solve for the three-digit number XYZ:

7XYZ7 + XYZ7 = 8360

8XYZ4 = 8360

Now, we can find the value of XYZ by solving for XYZ.

Result

The three-digit number is 493.