16-4-2=
2+3+7=
3+4-1=
9+9-8=
15-9-4=
8+4+6=
8-8+18=
15-7+4=
4+2+6=
14-3+1=
8+4-8=
13-4-7=
11+3-2=
2+13+2=
12-1-6=
5-4+5=
8+6+1=
10+8-7=
19-1-6=
2+13-10=
13-4+2=
13-10-3=
9+1-9=
7-5-2=
6+9-10=
11-1+6=
2+7-1=
7+1+4=
10-4+1=
10-9+13=
14-8+12=
16-9-5=
12-6+4=
9+2-7=
14+2-6=
14-10+12=
10-7+1=
14+1+2=
10+4+3=
12+6-2=