2+18= 6+8= 8+4= 12+3= 10-2=
18-6= 2+5= 17+3= 5+6= 11+6= 16-1=
2+6= 17+3= 17-1= 1+8=
2+12= 10+1= 4+12= 5+2= 14+2=
5+11= 17-7=
5+1= 10-1= 12+5=
11-2= 15+1= 19-11=
10+9= 16-7= 2+15=
16-15= 15+3= 9-4=
20-1= 17-16= 13+4= 20-1= 1+2= 20-3= 2+7= 19-6= 15-12= 9+1= 14-1= 5+2= 13+7= 19-4= 3+5= 17+3= 14+3= 1+14= 1+5= 3+14= 13-3= 10+2= 9-8= 12-8= 2+5= 19-18= 14+3= 17-3= 9-4= 6+13= 13+5= 7+7= 6+7= 12-11= 20-13= 13+6= 15-5= 20-1= 5+8= 18-12= 7+1= 20-6= 8+6= 3+13= 1+19= 17-16= 9+5= 2+10=
1+12=
8+12= 11-10=
3+3=
3+17= 8+4=
8+2=
2-1= 1+4=
9+9=
8+7= 20-18=
19-5=