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