Question

(4х – 5y = 1,2x – Зу = 2;​

Answer 1

Ответ:

Ответ на картинке

Объяснение:

Answer 2

Ответ:

Объяснение:

  {4х – 5y = 1

     {2x – Зу = 2  // * (-2)

      { 4x-5y=1

(+) {-4x+6y=-4    

-----------------.

              y=-3    подставляю в (1) уравнение для вычисления x

4x-5*(-3)=1

4x+15=1

4x=-14

x=-7/2

OTBET: решение - пара чисел: (- 7/2; -3)

Answer 3

It seems you have a system of two linear equations with two variables, x and y:

1. 4x - 5y = 1
2. 2x - 3y = 2

You can solve this system of equations using various methods such as substitution, elimination, or matrices. I'll use the elimination method to solve this system.

First, you can multiply both sides of the second equation by 2 to make the coefficients of x in both equations equal:

1. 4x - 5y = 1
2. 4x - 6y = 4

Now, you can subtract the second equation from the first equation to eliminate x:

(4x - 5y) - (4x - 6y) = 1 - 4 4x - 5y - 4x + 6y = 1 - 4

Now, simplify the equation:

y = -3

Now that you have found the value of y, you can substitute it into one of the original equations to solve for x. Let's use the first equation:

4x - 5(-3) = 1

4x + 15 = 1

Subtract 15 from both sides:

4x = 1 - 15 4x = -14

Now, divide both sides by 4 to find the value of x:

x = -14 / 4 x = -7/2

So, the solution to the system of equations is:

x = -7/2 y = -3