4-2+7=
19-9+1=
14+3-9=
17-10+5=
15+4-5=
4+8+5=
7+1+2=
18-5-10=
8-1+10=
2+10-10=
6-4+4=
4-3+5=
4+5+7=
9+3-1=
19-9-2=
4-3+5=
9-3+12=
14-9+3=
6+3-9=
15+4-4=
18-5+6=
13-4+8=
6+1+4=
17-6-3=
5+9-4=
9+4+1=
7-4+8=
16-4-2=
1-1+5=
4+11-1=
2+3+3=
16-9-3=
2+12-10=
11-9-2=
2+14-4=
6+1+5=
14+4-2=
12+1-4=
15-5-9=
10-10+15=