8+2= 9+1= 7+3= 6+4= 5+5=
5-2= 8-4= 9-7= 9+0= 10-7=
6+3= 9-4= 6+5= 2+6= 5+0=
10-8+2= 4+6-5= 9-3-5= 2+0+8=
10-2-3= 10-7+3= 0+7+2= 8-3+5=