Răspuns:
11-7+8= 4+8=12
16-9-6= 7-6= 1
12-9+8= 3+8= 11
20-7-5= 13-5= 8
Coronița?
11-7+8=4+8
=12
16-9-6=7-6
=1
12-9+8=3+8
=11
20-7-5=13-5
=8
