Сокращение дробей 12 — 30 14 — 64 36 — 108
12/30=(12:3)/(30:3)=4/10 14/64=14:2/64:2=7/32 36/108=36:2/108:2=18/54
1.6/15,7/32, 6/18=3/9=1/3
6/15=2/5