A line L passes through the point P(5, –6, 7) and is parallel to the planes x + y + z = 1 and 2x – y – 2z = 3. What is the equation of the line L ?
(x – 5)/1 = (y + 6)/4 = (z – 7)/(–3)
(x – 5)/(–1) = (y + 6)/4 = (z – 7)/(–3)
(x – 5)/1 = (y + 6)/(–4) = (z – 7)/3
(x – 5)/(–1) = (y + 6)/(–4) = (z – 7)/3
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