Question

5x + 1y + 4z=-1

4x + 6y +9z= -68
9x + 1y + 4z = 27
Select one:
(7,-4, -8)
(-4,-8, 7)
(-8, -7, -4)
(-7,4, -8)
(-7, -4, -8)

Answer 1

[7, -4, -8]

Explanation:

Just simply plug in each choice into the equations to confirm their authenticities.