5 / 6 + 9 / 10 + 1 / 6 1 / 1-5 3 / 5 2 / 8 5 / 12 1 + 5 / 12 3 / 4 - (7 / 12-1 / 4) 1 / 9 + 5 / 12 + 1 / 12 + 8 / 9 + 3 / 8 + (5 / 8-5 / 9) If it's easy, it's easy fast

5 / 6 + 9 / 10 + 1 / 6 1 / 1-5 3 / 5 2 / 8 5 / 12 1 + 5 / 12 3 / 4 - (7 / 12-1 / 4) 1 / 9 + 5 / 12 + 1 / 12 + 8 / 9 + 3 / 8 + (5 / 8-5 / 9) If it's easy, it's easy fast

1 / 9 + 5 / 12 + 1 / 12 + 8 / 9 = (1 / 9 + 8 / 9) + (5 / 12 + 1 / 12) = 3 / 2
3 out of 8 + (5 out of 8-5 out of 9) = 3 / 8 + 5 / 8-5 / 9 = 1-5 / 9 = 4 / 9