The planes
a)

b)

(a)
To find:
Find the point in the planes
The given planes are
The line of intersection
We have to find the point in both the planes for which
Substitute
The first plane equation becomes,
Simplifying,
The second plane equation becomes,
Simplifying,
Now, the plane equations are,
We have to solve the equations to find the point
(b)
To find:
Find the point in the planes
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