Odpowiedź:
Szczegółowe wyjaśnienie:
1/5 : 2/5 = 1/5 x 5/2 = 5/10 = 1/2
2 - 1 1/2 = 1/2
2 : 1 1/7 = 2/1 : 8/7 = 2/1 x 7/8 = 14/8 = 7/4 = 1 3/4
1 3/4 - 1/2 = 7/4 - 2/4 = 5/4 = 1 1/4
1/5 : 2 = 1/5 : 2/1 = 1/5 x 1/2 = 1/10
1 3/4 x 4/35 = 7/4 x 4/35 = 28/140 = 1/5
1/5 : 2/5 = 1/5 x 5/2 = 5/10 = 1/2
