Question

3x-2y=11 x+7y=82x-11y=22​

Answer 1

Ответ:

извините, если не правильно

Удачи!!:)

Answer 2

Ответ:

32-2

78-70

Дальше я не знаю

Answer 3

To solve this system of equations, you can use the method of substitution or elimination. I'll demonstrate the elimination method.

The system of equations is:

1. 3x - 2y = 11
2. x + 7y = 82
3. 2x - 11y = 22

First, let's simplify equation 2 by multiplying both sides by 2 to make the coefficients of x in equations 2 and 3 equal:

2 * (x + 7y) = 2 * 82 2x + 14y = 164

Now we have the system:

1. 3x - 2y = 11
2. 2x + 14y = 164
3. 2x - 11y = 22

Next, we can eliminate one of the variables. Let's eliminate x. To do this, subtract equation 3 from equation 2:

(2x + 14y) - (2x - 11y) = 164 - 22

This simplifies to:

25y = 142

Now, divide both sides by 25 to isolate y:

y = 142 / 25

y = 5.68 (rounded to two decimal places)

Now that we have found the value of y, we can substitute it back into equation 2 to find the value of x:

2x + 14(5.68) = 164

2x + 79.52 = 164

Subtract 79.52 from both sides:

2x = 164 - 79.52

2x = 84.48

Now, divide both sides by 2 to isolate x:

x = 84.48 / 2

x = 42.24

So, the solution to the system of equations is approximately:

x ≈ 42.24 y ≈ 5.68