8+2
10
6 +3 -1
8
5+2
7
5-1
4
8-4
4
4+2
6
8+1
9
1+3
4
5+3-7
1
5-3
2
5-5
0
3+5
8
6-3
3
8-4
4
10-3
7
6+3
9
6-3
3