3+4= 6-3= 5-5= 2+3= 4-2=
4-0= 2+3= 7-4= 1+6= 5-0=
5+2= 3+1= 6-6= 7-1= 2+4=
0+2= 2+5= 1+4= 5-3= 4-1=
43 69 2+35
85 100 77-2
个