Question

The following system has a solution: x= 10,y=-3,z = 14

3x + 7y-z= -5
9x-y-4z = 17
5x - 12y-z=0

Answer 1

3x + 7y - z = -5

Explanation:

`3(10) + 7(-3) - 14 = -5 \\ \\ 30 - 21 - 14 = -5`

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