А)2/9+45/9=4 7/9
4/9+4 5/9=5
7/9+4 5/9=5 3/9
1 1/9+4 5/9=5 6/9
2+4 5/9=6 5/9
3 4/9+4 5/9=8
б) 6 5/7-2 4/7=4 1/7
5 2/7-2 4/7=2 5/7
5- 2 4/7=2 3/7
4 1/7- 2 4/7= 1 4/7
3 4/7 - 2 4/7=1
3 2/7-2 4/7 =5/7
3-2 4/7=3/7
А)2/9+45/9=4 7/9
4/9+4 5/9=5
7/9+4 5/9=5 3/9
1 1/9+4 5/9=5 6/9
2+4 5/9=6 5/9
3 4/9+4 5/9=8
7/9+4 5/9=5 3/9
б) 6 5/7-2 4/7=4 1/7
5 2/7-2 4/7=2 5/7
5- 2 4/7=2 3/7
4 1/7- 2 4/7= 1 4/7
3 4/7 - 2 4/7=1
3 2/7-2 4/7 =5/7
3-2 4/7=3/7