[x-2y-2-9 3+2-5 21-4 [x-y+2-6 y-z--1 3z-6 (3x- y=6 2y=3 e) Jx+y=5 [2r-y=9

[x-2y-2-9 3+2-5 21-4 [x-y+2-6 y-z--1 3z-6 (3x- y=6 2y=3 e) Jx+y=5 [2r-y=9

Olá!! Oiê!! Tudo bem??!!