Question

x-y+z=2
2x-y+z=3
-x+3y-z=4​

Answer 1

Resposta:

x=1

y=3

z=4

Explicação passo-a-passo:

y=x+z-2

y=2x+z-3

x+z-2=2x+z-3

2x-x+z-z=-2+3

x=1

z=3+y-2

z=y+1

z=-1+3y-4= 3y-5

y+1=3y-5

2y=6

y=3

z=3+y-2

z=3+3-2

z=6-2

z=4