6-5= 7+10= 18+2=

5+4= 4+7= 2+14=

6+1= 13-4= 10-9=

19-11= 14+6= 2+18=

16-8= 10-8= 1+12=

8+4= 13+3= 4-1=

1+9= 14-5= 8+1=

4+4= 7+2= 16-2=

3+11= 14-13= 16+4=

19-11= 6+4= 10+9=

1+17= 12+6= 18-5=

17-11= 6-5= 3+16=

3+10= 10-1= 1+6=

17-14= 14+1= 20-1=

10-2= 18-7= 7+10=

9-7= 19-10= 20-4=

6+6= 15-10= 8+11=

14-3= 4+9= 19-1=

16+2= 18-7= 20-13=

14-1= 3+4= 14-5=

2+14= 16-2= 17-2=

6+8= 7+8= 6+3=

8-1= 20-13= 4-2=

20-16= 6+5= 17-13=

5+12= 5+2= 14+1=

5+6= 11-6= 9-2=

4+11= 5+8= 10+9=

5+2= 18-17= 13-1=

3+11= 4+14= 13-2=

13-6= 13-5= 2+4=

8+7= 11+2= 5+3=

4+4= 15-10= 10-9=

6-2= 5+10= 15-4=

14-2= 5+8= 9+6=

2+18= 4-3= 8-2=

5+2= 14-11= 14+2=

4+12= 4+12= 1+2=

5+9= 1+19= 20-7=

20-1= 9-8= 5+10=

19-15= 7+1= 19-14=

14-5= 6+14= 4+16=

10-2= 7-1= 10-3=

19-18= 6-3= 7+5=

14+6= 7+4= 5+10=

17-15= 4+15= 14-4=

14-10= 16-13= 15-2=

1+17= 13-1= 20-11=

4+5= 3+15= 5+2=

9-2= 9-1= 16-14=

10-5= 12+8= 2+1=

1+8= 14-7= 9+11=

3+4= 19-4= 20-14=

14+6= 13+4= 12-7=

10+7= 14+5= 9+5=

12+4= 5+9= 14-6=

15+2= 9+4= 7+9=

20-4= 14-3= 4+6=

20-5= 12-9= 6+2=

17+3= 19-6= 2+14=

20-8= 4+10= 7+2=

9-5= 20-14= 17-3=

5+6= 1+2= 4+12=

3+1= 9+7= 12-5=

3+11= 1+8= 4+12=

6-3= 14-13= 9+6=

17-3= 10+3= 19-11=