Ответ: в) 105/125 = 5*3*7 / 5*5*5 = 21/25;ж) 123/321 = 3*41 / 3*107 = 41/107;г) 24/36 = 2*2*2*3 / 2*2*3*3 = 2/3;з) 111/132 = 3*37 / 3*44 = 37/44