Zad.3 s.79
3/4 : 2 = 3/4 : 2/1 = 3/4 *1/2 = 3/8
3/2 : 4 = 3/2 : 4/1 = 3/2 * 1/4 = 3/8
4/5 : 3 = 4/5 : 3/1 = 4/5 * 1/3 = 4/15
Zad.4 s.79
a) 3/5 : 4 = 3/5 : 4/1 = 3/5 * 1/4 = 3/20
b) 2/7 : 3 = 2/7 : 3/1 = 2/7 *1/3 = 2/21
c) 8/9 : 5 = 8/9 : 5/1 = 8/9 * 1/5 = 8/45
d) 2 i 1/3 : 3 = 7/3 : 3/1 = 7/3 * 1/3 = 7/9
e) 3 i 3/4 : 5 = 15/4 : 5/1 = 15/4 * 1/5( po skróceniu 3/4 *1/1) = 3/4
f) 2 i 3/7 : 2 = 17/7 : 2/1 = 17/7 * 1/2 = 17/14 = 1 i 3/14
