Question

Alguem sabe resolver escalonamento?
Questao:
x+y-z=-5
2x+y+z=-1
4x+2y-z=-11

E o outro sistema da mesma questao:
2x+3y+2z=7
X+y+z=4
3x+2y-z=5

Answer 1

x+y-z=-5 (-2). (-4)

↲

2x+y+z=-1. ↲

4x+2y-z=-11

x+y-z=5

-y+3z=-1 (-2)

-2y+3z=9 ↲

x+y-z=-5

-y+3z=-1

-3z=11

z=-11/3

-y+3.11/3=-1

-y+11=-1

y=11+1

y=1

x+y-z=-5

x+1-(-11/3)=-5

x+1+11/3=-5

x=-1-11/3-5

x=-3-11-15/3

x=-29/3