Răspuns :
12:6=20:10 9:3=6:2 56:7=72:9
81:9=18:2 14:2=49:7 80:80=10:10
81:9=18:2 14:2=49:7 80:80=10:10
12:3=4=20:5=4 15:3=5=10:2=5 56:8=7=63:9=7 81:9=9=27:3=9 14:2=7=49:7=7 80:10=8=80:10=8