18 целых 5/13 - 9,5 =

Question

18 целых 5/13 - 9,5 =

Answer 1

18 5/13- 9 5/10=18 5/13- 9 1/2 =
18 10/26 - 9 13/26=17 36/26- 9 13/26=
8 23/26

или так
18 5/13-9 5/10=(18 -9)+(5/13-5/10)=
9+(5/13-1/2)=
8 26/26+(10/26-13/26)=
8+(26/26+10/26-13/26)=8 23/26