a) (5/12 + 3/18) * 8 = (15/36 + 6/36) * 8 = 21/36 * 8 = 168/36 = 4 24/36 = 4 2/3
b) (1 1/4 + 5/6) * 2 2/5 = (1 3/12 + 10/12) * 2 2/5 = 2 1/12 * 2 2/5 = 25/12 * 12/5 = 300/60 = 5
d) (1 1/12 - 11/15) * 1 3/7 = (1 5/60 - 44/60) * 1 3/7 = 21/60 * 10/7 = 3/6 * 1/1 = 3/6
e) (11/18 - 5/12) : 1 1/6 = (22/36 - 15/36) : 1 1/6 = 7/36 * 6/7 = 1/6
g) (1 5/6 + 3/4) : 1 7/24 = (1 10/12 + 9/12) : 1 7/24 = 2 7/12 : 1 7/24 = 31/12 * 31/24 = 961/288 = 3 97/288
h) (1 1/12 - 2 1/8) : 5/12 = (1 2/24 - 2 3/24) : 5/12 = -1 1/24 : 5/12 = -25/24 * 12/5 = -5/1 * 1/1 = -5
nie ma za co i liczę na naj ;*
