The plane π passes through the point M0 (1,1,1) and is parallel to the known plane x + 2Y + 3Z = 0

The plane π passes through the point M0 (1,1,1) and is parallel to the known plane x + 2Y + 3Z = 0

The equation parallel to the known plane x + 2Y + 3Z = 0 is x + 2Y + 3Z = k, substituting (1,1,1), k = 6
The plane equation is x + 2Y + 3Z = 6