Me ayudan porfis5 / 4 - x = 2 / 35 / 2 + 1 / 5 = 2 / 3 - xx + 1 / 2 = 3 / 43 / 7 + x = 5 / 7 + 1 / 12 / 3 + 1 / 5 = x + 1 / 2?
Me ayudan porfis 5 / 4 - x = 2 / 3 5 / 2 + 1 / 5 = 2 / 3 - x x + 1 / 2 = 3 / 4 3 / 7 + x = 5 / 7 + 1 / 1 2 / 3 + 1 / 5 = x + 1 / 2.