Odpowiedź:
5.
a) 1 2/7 : 4/5 = 9/7 * 5/4 = 45/28 = 1 17/28
b) 2 7/10 : 1 2/7 = 27/10 : 9/7 = 27/10 * 7/9 = 3/10 * 7 = 21/10 = 2 1/10
c) 3 3/4 : 1 7/8 = 15/4 : 15/8 = 15/4 * 8/15 = 1 * 2 = 3
