Odpowiedź:
i) 5,5 x 2 1/2 - 2,5x 2 1/2 = 5 1/2 x 2 1/2 - 2 1/2 x 2 1/2 = 11/2 x 5/2 - 5/2 x 5/2 = 55/2 - 25/2 = 35/2 = 17 1/2
j) 2 2/3 : (1 2/3:5) = 8/3 : (5/3 x 1/5) = 8/3: 5/15 = 8/3 : 1/3 = 8/3 * 3/1 = 24/3 = 8
k) 1 1/2 : (3/4x2) = 3/2 x 4/6 = 12/12 = 1
l) 2 2/3 : 1 1/6 :5 = 8/3 x 6/7 : 5 = 16/7 x 1/5 = 16/35
ł) 1 1/2 : 2 1/4 x 2 = 3/2 x 4/9 x 2 = 2/3 x 2/1 = 4/3 = 1 1/3
m) 1/2 : 3/4 x 2 : 1/6 = 1/2 x 4/3 x 2 : 1/6 = 2/3 x 2/1 : 1/6 = 4/3 x 6/1 = 8
n) 2 1/5 : 11/22 + 3/4 : 1 1/2 = 11/5 x 2/1 + 3/4 x 2/3= 22/5 + 1/2 = 44/10 + 5/10 = 49/10 = 4 9/10
o) 4 1/5 : 5/6 - 1 1/5 x 1 2/3 = 21/5 x 6/5 - 6/5x 5/3=
