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MHT CET20227 Aug 2022Evening ShiftMathematicsMatricesActual

If [ array ccc 1 & 1 & 1 1 & -2 & -2 1 & 3 & 1 array ] [ array l x y z array ]= [ array l 0 3 4 array ] , then 2 x-y+z=

Options

  1. A3
  2. B2
  3. C1
  4. D-3

Correct answer

D. -3

Step-by-step solution

From the given equation we have Solving we get x=1, y=2 and z=-3 Now, 2 x-y+z=2 1-2+(-3)=-3

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