1) 4 целых 5/6 + 3 целых 3/8 = 4 + 3 + 5/6 + 3/8 = 7 + 40/48 + 18/48 = 7 + 58/48 = 7 29/24
2) 8 целых 5/18 - 6 целых 7/12 = 8 - 6 + 5/18 - 7/12 = 2 - 2 + 10/18 - 14/12 = 10/18 - 14/12 = 5/9 - 7/6 = 10/18 - 21/18 = -11/18
3) 2 целых 2/3 - 1 целая 1/6 + 3 целых 2/15 = 2 - 1 + 2/3 - 1/6 + 3 + 2/15 = 1 + 4/6 - 1/6 + 3 + 2/15 = 1 + 3/2 + 3 + 2/15 = 8 2/15
4) 6 целых 13/35 + 1 целая 11/14 - 2,5 = 6 + 1 + 13/35 + 11/14 - 2.5 = 7 + 13/35 + 11/14 - 5/2 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 3/10 + 11/2 - 5/2 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 3/10 + 11/2 - 5/2 = 9 9/70.
1) 4 целых 5/6 + 3 целых 3/8 = 4 + 3 + 5/6 + 3/8 = 7 + 40/48 + 18/48 = 7 + 58/48 = 7 29/24
2) 8 целых 5/18 - 6 целых 7/12 = 8 - 6 + 5/18 - 7/12 = 2 - 2 + 10/18 - 14/12 = 10/18 - 14/12 = 5/9 - 7/6 = 10/18 - 21/18 = -11/18
3) 2 целых 2/3 - 1 целая 1/6 + 3 целых 2/15 = 2 - 1 + 2/3 - 1/6 + 3 + 2/15 = 1 + 4/6 - 1/6 + 3 + 2/15 = 1 + 3/2 + 3 + 2/15 = 8 2/15
4) 6 целых 13/35 + 1 целая 11/14 - 2,5 = 6 + 1 + 13/35 + 11/14 - 2.5 = 7 + 13/35 + 11/14 - 5/2 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 3/10 + 11/2 - 5/2 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 21/70 + 55/70 - 35/14 = 7 + 3/10 + 11/2 - 5/2 = 9 9/70.