2+4=
7 7 5 5
7>
○○○○
7,6,5,,3,,,
2+3= 1+4= 3+0= 0+5= 4-2=
6-5= 5-2= 6-4= 2+2= 5-0=
3+1= 4+3= 3-2= 5-4= 3+3=
7-2= 2+4= 5-1= 2+1= 4+1=
□○□=□(个)
(只)
1+3= 3-1= 6-4= 5+1= 3+4=
5-4= 6+0= 2+2= 7+0= 6-3=
7-7= 1+2= 5-3= 6-4= 1+5=
4+1= 7-3= 5-0= 1+1= 6-5=
2+3= 7+0= 5-0= 3+3=
6+1= 6-0= 5-4= 7-7=
5-4= 1+4= 2+( )=6 ( )+( )=7
75 58 33
2+45 6-60