[½-(1-1/3)]+[½-(1-¼)]+[½-(1-⅙)]

=(½-⅔)+(½-¾)+(3/6-1/6) = (3/6-4/6)+(2/4-3/4)+2/6= (-1/6)+(-1/4)+2/6= (-2/12)+(-3/12)+4/12=-5/12+4/12=-1/12

[1/2-(1-1/3)]+[1/2-(1-1/4)]+[1/2-(1-1/6)]= =[1/2-2/3]+[1/2-3/4]+[1/2-5/6]= =[3/6-4/6]+[4/8-6/8]+[3/6-5/6]= =-1/6+(-2/8)+(-2/6)= =-4/24+(-6/24)+(-8/24)= =-18/24= -9/12= -3/4 Wynik:-3/4