11-0=

1+18=

17-2=

15-11=

19+0=

16-14=

19+0=

13+2=

13+6=

14-4=

1+12=

12-11=

19-9=

6+7=

15-1=

18-6=

19-14=

16+0=

18-13=

16+0=

13-12=

17-12=

9+3=

13+6=

12-4=

17-8=

17-4=

19-19=

12-10=

17-0=

12+6=

15-2=

12-12=

12+3=

4+10=

17+0=

15+5=

14+5=

13+6=

19-13=

14+0=

18-5=

6+12=

13-12=

12+2=

14-1=

18-14=

15-1=

13-0=

11-10=