Odpowiedź :
a) 3/4 : 1/7 = 3/4 x 7/1 = 21/4 = 5 1/4
b) 7/9 : 7/9 = 7/9 x 9/7 = 63/63 = 1
c) 4/15 : 8/9 = 4/15 x 9/8 = 36/120 = 9/30 = 3/10
zad. 2
a) 35/6 : 7/3 = 35/6 x 3/7 = 105/42 = 15/6 = 5/2 = 2 1/2
b) 8/3 : 16/5 = 8/3 x 5/16 = 40/48 = 5/6
c) 35/8 x 8/5 = 280/40 = 7
zad. 3
2 1/4 = 9/4 = 18/8
porcje po 3/8 czyli 9/4 x 8/3 = 72/12 = 6
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