Question

Proszę rozwiązać J) K) L)

Answer 1

J)
 4/5 * 2/9 * 6/7 * 7/8 = 
8/45 * 6/7 * 7/8 = 
48/315 * 7/8 = 336/2520 = 168/1260 =  42/315 = 6/45 = 2/15

k) 
4/7 * 1 i 3/4 * 3 i 1/2 = 
4/7 * 7/4 * 7/2 = 
28/28 * 7/2 = 7/2 = 3 i 1/2 

l) 
1 i 5/8 * 3 i 1/5 * 2/26 = 
13/8 * 16/5 * 2/26 = 
208/40 * 2/26 = 416/1040 = 4/10 = 2/5