5 - Determine a, b, x e y, tais que: a) a = 2, b = 1, x = 1 e y = 1. b) a = 1, b = 1, x = 1 e y = 2. c) a = 1, b = 1, x = 2 e y = 1. d) a = 1, b = 2, x = 1 e y = 1. e) a = 2, b = 1, x = 1 e y = 2. a) a = 2, b = 1, x = 1 e y = 1. b) a = 1, b = 1, x = 1 e y = 2. c) a = 1, b = 1, x = 2 e y = 1. d) a = 1, b = 2, x = 1 e y = 1. e) a = 2, b = 1, x = 1 e y = 2.