Source: - Manhattan GMAT (www.manhattangmat.com)
w, x, y, and z are integers. If w > x > y > z > 0, is y a common divisor of w and x?
(1)w/x = z^-1 + x^-1
(2)w^2-wy-2w=0
w, x, y, and z are integers. If w > x > y > z > 0, is y a common divisor of w and x?
(1)w/x = z^-1 + x^-1
(2)w^2-wy-2w=0
