(5/14 + 16/21) * 3 3/5 + 1 1/6 / (13/22-25/33) = -2 34/35
1) 5/14 + 16/21 = 15/42 + 32/42 = 47/42
2) 47/42 * 3 3/5 = 47/42 * 18/5 = 47/7 * 3/5 = 141/35
3) 13/22 - 25/33 = 39/66 - 50/66 = -11/66 = -1/6
4) 1 1/6 : (-1/6) = 7/6 * (-6/1) = -7
5) 141/35 + (-7) = 141/35 - 245/35 = -104/35 = -2 34/35