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The number of solutions of the equations $x + y - 2 z = 0$ , $x + y + z = 3$ , $2 x + y - z = 1$ is

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detailed solution

Correct option is B

[AB]=11-200-13121-11~11-2000330-131R2−R1R3−2R1 ~11-200-1310033⇒Unique solution

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The number of solutions of the equationsx+y−2z=0 ,x+y+z=3 ,2x+y−z=1 is

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The number of solutions of the equations $x + y - 2 z = 0$ , $x + y + z = 3$ , $2 x + y - z = 1$ is