Odpowiedź:
(3/4 + 2/3) : 5/12 = (9/12 + 8/12) : 5/12 = 17/12 * 12/5 = 17/5 = 3 i 2/5
1 i 3/5 - 3/5 : (1/2 + 3/5) = 1 i 3/5 - 3/5 : (5/10 + 6/10) = 1 i 3/5 - 3/5 : 11/10 = 1 i 3/5 - 3/5 * 10/11 = 1 i 3/5 - 6/11 = 1 i 33/55 - 30/55 = 1 i 3/55
zad 2
5/9 : 7/10 : 10/21 = 5/9 * 10/7 * 21/10 = 5/9 * 3 = 15/9 = 1 i 6/9 = 1 i 2/3
3/10 * 15/18 : 3/20 = 3/10 * 15/18 * 20/3 = 3/12 * 20/3 = 20/12 = 1 i 8/12 = 1 i 2/3
3/25 * 5³ : 6 = 3/25 * 125 * 1/6 = 15 * 1/6 = 15/6 = 2 i 3/6 = 2 i 1/2
