Use the Gaussian elimination to solve the following equations, so the variables X and Y are........... 8X-4Y+4Z = 12 -6X+3Y+3Z = 9 2X-Y-2Z =-6 O a. None of options O b. -1, 4 O c. -2,7 O d. 2, 3 O e. 1, 6

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