GATE | GATE-IT-2004 | Question 6

What values of x, y and z satisfy the following system of linear equations? 

(A)

x=6, y=3, z=2

(B)

x=12, y=3, z=-4

(C)

x=6, y=6, z=-4

(D)

x=12, y=-3, z=0

Answer: (C)

Explanation:

1 * x + 2 * y + 3 * z = 6 
1 * x + 3 * y + 4 * z = 8 
2 * x + 2 * y + 3 * z = 12

Put x =6 , y = 6 and z = -4

The above three equation are satisfied.

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