Question

2х-7у=6 -4х+14у=-12?

Answer 1

Ответ:

нет

Пошаговое объяснение:

-6+6 это не 12

Answer 2

It looks like you've provided a system of two linear equations with two variables:

Equation 1: 2x - 7y = 6 Equation 2: -4x + 14y = -12

To solve this system of equations, you can use different methods like substitution, elimination, or matrix methods. I'll use the elimination method here.

First, let's multiply the second equation by 2 to make the coefficients of x in both equations equal:

Equation 2 (multiplied by 2): -8x + 28y = -24

Now, you can add the modified Equation 2 to Equation 1:

(2x - 7y) + (-8x + 28y) = 6 + (-24) -6x + 21y = -18

Now, let's solve for y in terms of x from this equation:

21y = 6x - 18 y = (6x - 18) / 21 y = (2x - 6) / 7

Now that you have the value of y in terms of x, you can substitute it back into Equation 1 to solve for x:

2x - 7 * ((2x - 6) / 7) = 6 2x - 2x + 6 = 6 6 = 6

The equation 6 = 6 is always true, which means that the two equations are dependent and represent the same line in the coordinate plane. This indicates that the system of equations has infinitely many solutions, and the equations are not providing unique values for x and y.

In summary, the given system of equations is dependent and has infinitely many solutions. The equations represent the same line in the coordinate plane.