28-( )=13
22-( )=14
28-( )=20
25-( )=24
46-( )=46
29-( )=6
39-( )=24
49-( )=12
23-( )=10
24-( )=5
41-( )=0
34-( )=33
40-( )=23
41-( )=2
35-( )=7
28-( )=9
39-( )=21
41-( )=8
48-( )=35
22-( )=8
28-( )=0
38-( )=34
48-( )=0
49-( )=19
37-( )=9
22-( )=19
46-( )=42
36-( )=14
49-( )=34
25-( )=20
48-( )=25
48-( )=31
31-( )=1
37-( )=11
38-( )=7
22-( )=10
45-( )=18
23-( )=3
25-( )=25
38-( )=26
32-( )=28
39-( )=36
36-( )=7
36-( )=9
27-( )=20
44-( )=39
37-( )=1
45-( )=33
45-( )=36
29-( )=0