Ответ Автор - Oksana14011977 12, 4 * 17/31 = 12 4/10 * 17/31 = 12 2/5 * 17/31 = 62/5 * 17 *31=62 * 17 / 5 * 31 = 2*17/5*1 = 34/5 = 6 4/5 = 6 8/10 = 6,8