3 dziewiąte podzielić przez 7 całych
plis potrzebne na jutro
3/9 : 7 = 3/9 : 7/1 = 3/9 x 1/7 = 3/63 = 1/21
3/9 / 7= 3/9*1/7=3/63=1/21
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3/9 : 7 = 3/9 : 7/1 = 3/9 x 1/7 = 3/63 = 1/21
3/9 / 7= 3/9*1/7=3/63=1/21