Odpowiedź:
a) 5 * 7/10 = 1 * 7/2 = 7/2 = 3 1/2 = 3,5
b) 18 * 5 2/3 = 18 * 17/3 = 6 * 17 = 102
c) 8/21 * 7/12 = 2/3 * 1/3 = 2/9
d) 2 1/3 * 1 2/7 = 7/3 * 9/7 = 1 * 3 = 3
e) 4 1/6 : 15 = 25/6 * 1/15 = 5/6 * 1/3 = 5/18
f) 8/14 : 4/7 = 8/14 * 7/4 = 2/2 * 1 = 1
g) 12 : 6/11 = 12 * 11/6 = 2 * 11 = 22
h) 4 2/7 : 3 1/8 = 30/7 : 25/8 = 30/7 * 8/25 = 6/7 * 8/5 =
= 42/35 = 1 7/35 = 1 1/7