Кнаименьшиму общему знаменателю обыкновенные дроби. 1) 7/8 и 2/3. 2) 6/7 и 4/5. 3) 3/5 и 4/9. 4) 8/11 и 5/6. 5) 9/10 и 1/3. 6) 11/15 и 4/7. 7) 5/8 и 1/11. 8) 17/20 и 2/9.
1) 7/8 и 2/3 = 21/24 и 16/24 2) 6/7 и 4/5 = 30/35 и 28/35 3) 3/5 и 4/9 = 27/45 и 20/45 4) 8/11 и 5/6 = 48/66 и 55/66 5) 9/10 и 1/3 = 27/30 и 10/30 6) 11/15 и 4/7 = 77/105 и 60/105 7) 5/8 и 1/11 = 40/88 и 8/88 8) 17/20 и 2/9 = 153/180 и 40/180
2) 6/7 и 4/5 = 30/35 и 28/35
3) 3/5 и 4/9 = 27/45 и 20/45
4) 8/11 и 5/6 = 48/66 и 55/66
5) 9/10 и 1/3 = 27/30 и 10/30
6) 11/15 и 4/7 = 77/105 и 60/105
7) 5/8 и 1/11 = 40/88 и 8/88
8) 17/20 и 2/9 = 153/180 и 40/180