Răspuns:
Explicație pas cu pas:
a)131313 = 13 *10101, 656565= 65*10101
131313/656565 =1310101/(65*10101) =13/65 =1/5
b) 42 = 3*14
140014 = 14*10001, 420042 = 42*10001
140014/420042 = 14*10001/(42*10001) =14/42 = 1/3
c) 70707 = 7*10101, 616161=61*10101
70707/616161 = 7/61
d) 50505= 5*10101, 373737= 37*10101
50505/373737 = 5/37