Вычислите произведение с объяснение м: 1) 44/45*3/5*10/11 2) 30/77*11/18*3/25 3) 20/13*39/100*10/21
44/45 * 3/5 = 132/225 132/225 * 10/11 = 1320/2475= 264/ 495 30/77 * 11/18 = 330/1386 = 55/231 55/231 * 3/25 = 165/5775= 33 / 1155= 3/105 20/13 * 39/100 = 780/ 1300 = 78 /130 78/ 130 *10/21 = 780 /2730=78/273 =26/ 91