Respuesta :

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(18×5×2×2 x y)/(2 x - 3 y)
18×5 = 90:
(90×2×2 x y)/(2 x - 3 y)
90×2 = 180:
(180×2 x y)/(2 x - 3 y)
180×2 = 360:
Answer:  (360 x y)/(2 x - 3 y)