Suma 3 / 4 + 1 / 5, 2 / 7 + 1 / 9, 8 / 3 + 2 / 7, 2 / 5 + 7 / 9, 6 / 5 + 1 / 3, 3 / 5 + 2 / 3, 7 / 2 + 3 / 4, 9 / 4 + 12 / 3, 7 / 8 + 6 / 8, 3 / 2 + 1 / 4, 12 / 3 + 1 / 5, 16 / 5 + 1 / 7?
Suma 3 / 4 + 1 / 5, 2 / 7 + 1 / 9, 8 / 3 + 2 / 7, 2 / 5 + 7 / 9, 6 / 5 + 1 / 3, 3 / 5 + 2 / 3, 7 / 2 + 3 / 4, 9 / 4 + 12 / 3, 7 / 8 + 6 / 8, 3 / 2 + 1 / 4, 12 / 3 + 1 / 5, 16 / 5 + 1 / 7.