For the equation xy−x−y=5xy - x - y = 5xy−x−y=5, which of these are integer solutions?
(2,7)(2, 7)(2,7)
(3,4)(3, 4)(3,4)
(6,1.2)(6, 1.2)(6,1.2)
(0,−5)(0, -5)(0,−5)