Question

urgenteeeeeeee
× - 2y + z = - 4
2x + y - z = -1
-x + 3y + 4z = 3​​

Answer 1

Resposta:

a) o X e +2 conta:

+(−2y+z+2)−{−4}=0

−2y+z+6=0

(−2)⋅y+(z+6)=0

y=−(z+6)/−2

y=12z+3

b) 2x+y−z+1=0

(2)⋅x+(y−z+1)=0

x=−(y−z+1)/2

x=−1/2y+1/2z−1/2

c)??

Explicação passo a passo: