Răspuns:
1/2÷1/4=1/2×4/1=4/2=2
3/5÷1/25=3/5×25/1=15/1=15 simplifici 5 cu25 prin 5
7/12÷14/3=7/12×3/14=1/8simpifici 12 si 3 prin 3 si7 si 14 priin 7
11/5÷2/1=11/5×1/2=11/10
14/3÷7=14/3×1/7=2/3
15/1÷3/8=15/1×8/3=40/1=40
2 1/3=2×3+1/3=7/3
7/3÷7/9=7/3×9/7=3/1=3
h)31
i)10
l)4/3