September 2018 1 49 Report
¿Cuál es el determinante D1 del siguiente sistema lineal?


3x+2y+z=1



−x+5y+3z=21



x−7y+z=5


Seleccione una respuesta.

a. 1 2 1
21 5 3
6 -7 1

b. 5 2 1
21 5 3
1 -7 1


c. 1 2 1
21 5 3
5 7 1

d. 21 2 1
1 5 3
1 -7 -1





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