dmitrij330 3/4 - 4/3
8/7 - 7/8
2 1/5= 11/5 - 5/11
3 5/9=32/9 - 9/32
10 1/5=51/5 - 5/51
1 1/99=100/99 - 99/100
11/1 - 1/11
3/1 - 1/3
1/1 - 1/1