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