а) 2,8/16,8 = 28/168 = 1/6
б) 2(1/4) / 1(3/8) = (9/4) / (11/8) = (9/4) * (8/11) = 72/44 = 18/11
в) 1,21 / 3(2/3) = 1,21 / (11/3) = 1,21 * (3/11) = 3,63/11 = 363/110
а) 2,8/16,8 = 28/168 = 1/6
б) 2(1/4) / 1(3/8) = (9/4) / (11/8) = (9/4) * (8/11) = 72/44 = 18/11
в) 1,21 / 3(2/3) = 1,21 / (11/3) = 1,21 * (3/11) = 3,63/11 = 363/110