Question

x+2y=-1; 2x-3y=12 solve by using Cramer's rule ​

Answer 1

Answer:

x=27/-7 y=-2

Step-by-step explanation:

x+2y=-1; 2x-3y=12

x=27/-7 y=-2

Answer 2

Answer:

y=-2;x=3

Step-by-step explanation:

DX=-1/12 × 2/-3

(-1×-3) - (2×12)

3-24

Dx=-21

Dy=1/2×-1/12

(1×12) - (-1×2)

12+2

Dy=14

D=1/2×2/-3

(1×-3) - (2×2)

-3-4

D=-7

y=Dy/D

14/-7

y=-2

x=DX/D

-21/-7

x=3