19-2-3=
9-3=
8+2=
9-5=
4+1+1=
9-5=
4+15-0=
2+2=
13+0+1=
12-2-8=
20-15+5=
2+15-1=
12-0=
17-2=
20-14+3=
19-2-3=
9-3=
8+2=
9-5=
4+1+1=
9-5=
4+15-0=
2+2=
13+0+1=
12-2-8=
20-15+5=
2+15-1=
12-0=
17-2=
20-14+3=