8+=15
3+=11
14-614-7
13-813-7
12-412-3
-10=6 12- =9 +6=14
16- =8 +6=12 15-=7
-7=7 14- =5 18-=9
12-6=
8+6=
11-5=
3+8=
13-4=
14-=5 17-= 8
5+=10 7+=16
=(只)
=(个)
=(只)
=(根)
=(本)