5/18 - 5/12 - 4,3-5 - 9,5
5/ 18 + 5/12 - 4.3 - 5 - 9.5 = 10/36 + 15/36 -9.3-9.5 = 25/36 - 18.8 = 25/36 - 18_4/5 = -18_144/180 + 125/180 = -18_19/180