If points ( 1, 2), (x, 4), (7, 3), (5, y)are vertices of a rectangle then find the valueof x+y

If points ( 1, 2), (x, 4), (7, 3), (5, y)are vertices of a rectangle t

1.	If points ( 1, 2), (x, 4), (7, 3), (5, y)are vertices of a rectangle then find the valueof x+y
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