Question

Escalonar e resolver os sistemas abaixo:

3x+2y+z=10
x+2y+2z=10
x+y+z=10

Answer 1

(i)-(iii)

2x +y= 0

(ii) -2(iii)

-x= -10
X= 10

Logo y= -20


X+y+z= 10
10-20 +z=10
Z=20