Сравните дроби: 1) 9/10 и 17/20 2) 4/9 и 10/27 3) 3/10 и 4/15 4) 6/7 и 2/3 вычислите: 1) 7/12 - 3/8 2) 11/16 - 5/8 3) 8/15 - 4/9 4) 11/48 - 5/36 5) 4/5 - 2/3 + 4/15

1) 7/12 - 3/8 = (14 - 9)/24 = 5/24 2) 11/16 - 5/8 = (11 - 10)/16 = 1/16 3) 8/15 - 4/9  = (24 - 20)/45 = 4/25 4) 11/48 - 5/36 = ( 44 - 15)/144 = 29/44 5) 4/5 - 2/3 + 4/15 = (12 - 10 + 4)/15 = 6/15 1) 9/10 > 17/20 | 20 18/20 > 17/20 2) 4/9 > 10/27 | 27 12/27 > 10/27 3) 3/10 > 4/15 | 30 9/30 > 8/30 4) 6/7 > 2/3 | 21 18/21 > 14/21