2) (6-2,43) : 4 1/4 4) 15,96 : (9/25 + 2,04) 6) 1 : ( 0,54 + 1,96) /-дробь
2)) (6-2,43) : 4 1/4= 3,57 : (4 (1•25)/(4•25) )= 3,57: (4 25/100)= 3,57 : 4,25= 0,84 4)) 15,96: (9/25+ 2,04)= 15,96: ( (9•4)/(25•4) + 2,04)= 15,96: (36/100+ 2,04)= 15,96: ( 0,36+ 2,04)= 15,96: 2,4= 6,65 6)) 1: (0,54+ 1,96)= 1: (2,5)= 0,4