x(y + 1) - 2y = 7
y = 0 x = 7
y = 1 2x = 9 x = 4,5
y = 2 3x = 11 x = 11/3
y = 3 4x = 13 x = 13/4 = 3,25
y = 4 5x = 15 x = 3
y = 5 6x = 17 x = 17/6
y = 6 7x = 19 x = 19/7
y =7 8x = 21 x = 21/8
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in text trebuie sa fie enumerate niste conditii in functie de care vei alege perechile potrivite
