4+3= 2+8= 9-3= 2-2= 1+5+3=
5+0= 18-4= 10-0= 6+9= 9+1-7=
8+5= 10-8= 14-4= 7+10= 10-1-9=
12+5= 7+7= 2+6= 2+0+7= 8-6+6=