а) 4 1/6 + 3 2/5 = 4 + 3 + 1/6 + 2/5 = 7 5/6
б) 8 3/4 - 7 5/6 = 8 - 7 + 3/4 - 5/6 = 1 6/24 - 20/24 = 1 - 1/3 = 2/3
в) 2 11/12 + 6 5/8 = 2 + 6 + 11/12 + 5/8 = 8 29/24 = 9 5/24
г) 2 13/14 - 1 20/21 = 2 - 1 + 13/14 - 20/21 = 1 13/14 - 20/21 = 1 273/294 - 280/294 = 1 - 7/294 = 1 - 1/42 = 41/42
а) 4 1/6 + 3 2/5 = 4 + 3 + 1/6 + 2/5 = 7 5/6
б) 8 3/4 - 7 5/6 = 8 - 7 + 3/4 - 5/6 = 1 6/24 - 20/24 = 1 - 1/3 = 2/3
в) 2 11/12 + 6 5/8 = 2 + 6 + 11/12 + 5/8 = 8 29/24 = 9 5/24
г) 2 13/14 - 1 20/21 = 2 - 1 + 13/14 - 20/21 = 1 13/14 - 20/21 = 1 273/294 - 280/294 = 1 - 7/294 = 1 - 1/42 = 41/42