a) (4/15 + 1,15) : 1 7/18 = ( 4/15 + 23/20) : 25/18 = 17/12 : 25/18 = 17/12 * 18/25 ( skróć 12 z 18 przez 6 ) = 51/50 = 1 1/50 = 1,02
b) 1/3 - 6/10 * 12/5 - 4/5 : 1/5 + 4
= 1/3 - 36/25 - 4/5 * 5/1 + 4 = 1/3 - 36/25 - 4/1 + 4/1 = 25/75 - 108/75 - 300/75 + 300/75 = -83/75
= -1 8/75
Nie ma za co
