Question

{ 6 x + 5 y = − 8 ; 4 x + 7 y = 2

Answer 1

Ответ:

1)xy=-19 ; 2)xy=-9

Объяснение:

6x+5y=-8

11+xy=-8

xy=-8-11

xy=-19

4x+7y=2

11+xy=2

xy=2-11

xy=-9

Вроде так.

Answer 2

To solve the system of equations:

1. 6x + 5y = -8
2. 4x + 7y = 2

There are several methods to solve this system, such as substitution, elimination, or using matrix methods. I'll use the elimination method here:

Step 1: Multiply equation 1 by 4 and equation 2 by 6 to make the coefficients of x in both equations the same: 24x + 20y = -32 24x + 42y = 12

Step 2: Subtract equation 1 from equation 2 to eliminate x: (24x + 42y) - (24x + 20y) = 12 - (-32) 42y - 20y = 12 + 32 22y = 44 y = 2

Step 3: Substitute the value of y back into either of the original equations. Let's use equation 1: 6x + 5(2) = -8 6x + 10 = -8 6x = -18 x = -3

Therefore, the solution to the system of equations is x = -3 and y = 2.