R
19-5=
14
19-8=
11
11-6=
5
18-2=
16
14-7=
7
49-9=
40
17-3=
14
39-6=
33
56-1=
55
35-4=
31
88-16=
72
49-21
28
78-54=
24
89-46=
43
99-98=
1
73-42=
31
38-26
12
75-45=
30
99-53=
46
67-34=
33
948-634=
314
530-220=
310
665-244=
421
759-432=
327
839-627=
212