Resposta :
Temos...
[tex]A)x-210=0\to X=210[/tex]
[tex]C)3x-z=10\to 3.(210)-z=10\to 630-z=10\to Z=620[/tex]
[tex]B)Z-X\to 620-210=410\to Y=410[/tex]
Daí, temos as alternativas "D"e"E"!
[tex]A)x-210=0\to X=210[/tex]
[tex]C)3x-z=10\to 3.(210)-z=10\to 630-z=10\to Z=620[/tex]
[tex]B)Z-X\to 620-210=410\to Y=410[/tex]
Daí, temos as alternativas "D"e"E"!