Respuesta:
Explicación paso a paso:
2x+y-z=7
CAMBIAMOS
2(3) + 2-1 = 7
6 + 1 = 7
----------------------------
x+3y+2z=11
3 + 3(2) + 2(1) = 11
3 + 6 + 2 = 11
9 + 2 = 11
11 = 11
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Respuesta:
Explicación paso a paso:
2x+y-z=7
CAMBIAMOS
2(3) + 2-1 = 7
6 + 1 = 7
----------------------------
x+3y+2z=11
CAMBIAMOS
3 + 3(2) + 2(1) = 11
3 + 6 + 2 = 11
9 + 2 = 11
11 = 11