10+7=
10+3=
19-1-16=
13+7=
3+5-1=
17-0=
8-7=
3+11=
20-19=
13-12+0=
20-0-15=
8-4=
18-12=
19-14=
9-0=
10+7=
10+3=
19-1-16=
13+7=
3+5-1=
17-0=
8-7=
3+11=
20-19=
13-12+0=
20-0-15=
8-4=
18-12=
19-14=
9-0=