Question

3x + y = -1 , x - 2y = -5 solve this equation by matrix method​

Answer 1

Step-by-step explanation:

3x + y = -1 --------(1)

3× ( x- 2y = -5) = 3x - 6y = -15 --------(2)

subtacting equ 1 and 2

y+6y = -1+15

7y= 14

y = 2

put y value in equation 1 we get

x= -1