Răspuns :
1250/1725 ->simplificat prin 25 = 50/69
1680/2640 -> simplificat prin 20 -> 84/132 , simplicat iarăşi prin 4 = 21/33 , prin 3 = 7/11
1680/2640 -> simplificat prin 20 -> 84/132 , simplicat iarăşi prin 4 = 21/33 , prin 3 = 7/11