16-4+3=
8-4+10=
7-1-3=
11-2+2=
12-2-1=
1+8-9=
4+11-7=
12-9+11=
8-3+2=
6+13-3=
11+5-3=
7-4+7=
5-1+3=
6+2-4=
8+3-7=
2+9+1=
16-7-4=
13-9-2=
17+1-7=
1+8-7=
16-4-4=
18+1-8=
9-7+17=
2+15-1=
6-5-1=
16-2-4=
8-2-1=
12-7+12=
12-4+5=
9-8+18=
4-3+10=
4+5-9=
12-5-3=
7+1+5=
9+5-8=
8-3+5=
2+17-9=
2+6+11=
9-5+11=
5-4+11=