А)1) 1 5/7 + 2 3/7 = 3 8/7
2) 3 8/7 + 1 4/7 = 6 5/7
б)1) 13 4/7 + 5 5/7 = 19 2/7
2) 19 2/7 - 2 6/7 = 16 1/7
в)1) 5 1/5-3 3/5 = 1 2/5
2) 1 2/5 + 4 4/5 = 6 1/5
г)1) 7 11/16 + 2 5/16 = 10
2) 10 + 8 7/16 = 1 9/16
д)1) 24 1/15 - 12 4/15 = 11 11/15
2) 11 11/15 - 2 3/15 = 9 8/15
е)1) 8 2/5 - 1 4/5 = 6 1/5
2) 6 1/5 - 2 3/5 = 3 2/5