5. 44:2-4 88:44-36 13-7-8-5 18.4+6.4

44:2-4 = 22-4 = 18

88:44-36 = 2-36 = -34

13-7-8-5 = 6-8-5 = -2-5 = -7

18.4+6.4 = 72+24 = 96