Question

Решите уровнение 2х-15=13 7у-25=45130-4х=70 Помогите решить прошу я болела и пропустила эту Тему

Answer 1

1) 2х=13+15 2х=28 х=28÷2=14 2) 7у=451+25 7у=476 у=476÷7=68 3)130-70=4х 4х=60 х=60÷4=15

Answer 2

Solving the Equations:

To solve the given system of equations, we'll solve each equation separately and then find the values of x and y.

1. Solving 2x - 15 = 13: - Adding 15 to both sides of the equation, we get: ``` 2x = 13 + 15 2x = 28 ``` - Dividing both sides by 2, we find: ``` x = 28 / 2 x = 14 ```

2. Solving 7y - 25 = 45: - Adding 25 to both sides of the equation, we get: ``` 7y = 45 + 25 7y = 70 ``` - Dividing both sides by 7, we find: ``` y = 70 / 7 y = 10 ```

3. Solving 130 - 4x = 70: - Subtracting 130 from both sides of the equation, we get: ``` -4x = 70 - 130 -4x = -60 ``` - Dividing both sides by -4, we find: ``` x = -60 / -4 x = 15 ```

Solution:

So, the solution to the system of equations is: - x = 14 - y = 10 - x = 15

These are the values of x and y that satisfy the given equations. If you have any more questions or need further assistance, feel free to ask!