Odpowiedź :
3 2/5 - 4 1/2 = 17/5 - 9/2 = 34/10 - 45/10 = -11/10 = -1 1/10
2 3/5 - 2 5/6 = 13/5 - 32/6 = 78/30 - 160/30 = -82/30 = -2 22/30 (skracam) = -2 11/15
3 2/5 - 4 1/2 = 17/5 - 9/2 = 34/10 - 45/10 = -11/10 = -1 1/10
2 3/5 - 2 5/6 = 13/5 - 32/6 = 78/30 - 160/30 = -82/30 = -2 22/30 (skracam) = -2 11/15