5+1 = 6
6-2 = 4
3+5 = 8
4-1 = 3
5+2 =7
6+4 = 10
10-2 = 8
5-1 = 4
8-6 = 2
3+3 = 6
1-1 = 0
2-2 = 0
6-3=3
5+1 = 6
6-2 = 4
3+5 = 8
4-1 = 3
5+2 =7
6+4 = 10
10-2 = 8
5-1 = 4
8-6 = 2
3+3 = 6
1-1 = 0
2-2 = 0
6-3=3