+1072 1. Let x and y be positive real numbers such that x + y = xy Find the smallest possible value of x + y.
2. For positive real numbers x, y, and z, find the minimum value of
1. The minimum value of x + y is 5/4.
2. The minimum value is 31, for x = y = z = 1. Easy!
+1072 I realized, sometimes when I post a question, a Guest comes and answers it, but puts no explanation, and they are always wrong.
