1-1/3=3/3-1/3=2/3
1-3/10=10/10-3/10=7/10
4-1/9=3 9/9-1/9=3 8/9
8-2/3=7 3/3-2/3=7 1/3
5-2/5=4 5/5-2/5=4 2/5
5 7/9-3=2 7/9
12 1/4-9=3 1/4
6-3 2/5=5 5/5-3 2/5=2 3/5
1-1/3=2/3
1-3/4=1/4
4-1/9=3 8/9
8-2/3=7 1/3
5-2/5=4 3/5
Б)
5 7/9-3=2 7/9
6-3 2/5=3 3/5
4-2 3/5=2 2/5
4 5/7-3/7=4 2/7
10 8/9-2/9=10 2/3
6 1/7-1=5 1/7
7-5 3/7= 1 4/7
2 3/5-3/5=2
