Odpowiedź:
3 i 1/5 : (2 i 1/2 - 1 i 3/4) = 3 i 1/5 : (2 i 2/4 - 1 i 3/4) = 3 i 1/5 : (1 i 6/4 - 1 i 3/4) = 3 i 1/5 : 3/4 = 16/5 * 4/3 = 64/15 = 4 i 4/15
