The number of solutions of the system of equations
2x + y - z = 7, x - 3y + 2z = 1, x + 4y - 3z = 5 is
A)3
B)2
C)1
D)4
2x + y - z = 7, x - 3y + 2z = 1, x + 4y - 3z = 5 is
A)3
B)2
C)1
D)4
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