The numbers x, y, z, and w are all integers. x and y are variable, and z and w are constant and positive. The four integers are related by the equation xy = z(x + w). When y takes its maximum possible value, which expression is equal to y - x?
Select one option, then click Submit.
zw - 1
(z - 1)(w - 1)
(z + 1)(w - 1)
(z - 1)(w + 1)
(z + 1)(w +
Select an option, then submit.
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