Question

Me responde essa questão aqui

Answer 1

2x+y-z=1

x-y+z=2

x+3y-2z=3

2 1 -1

1 -1 1 = -4-3+1-1-6-2

1 3 -2 -6-9

D= -15

D×= 1 1 -1

2 -1 1 = 2+6+3-3-3+4

3 3 -2 11-2

D×=9

Dy= 2 1 -1

1 2 1 = -8-3+1+2-6+2

1 3 -2 -10-2

Dy= -12

Dz= 2 1 1

1 -1 2 = -6+3+2+1-12-3

1 3 3 -1-14

Dz= -15

espero que esteja certo!