Odpowiedź:
d)
11/14 * 7/9 = 11/2 * 1/9 = 11/18
e)
5/7 : 10/21 = 5/7 * 21/10 = 1 * 3/2 = 3/2 = 2 1/2
f)
2 3/5 * 7 1/2 = 13/5 * 15/2 = 13 * 3/2 = 39/2 = 19 1/2
c)
13,2 * 0,35 = 132/10 * 35/100 = 66/5 * 7/20 = 462/100 = 4,62
d)
3,24 : 0,9 = 324/100 : 9/10 = 81/25 * 10/9 = 810/225 = 3 135/225 =
= 3 9/15 = 3 3/5 = 3,6
