Если возможно, к числителю 80 дробь: 8/7; 20/9; 6/17; 1/2; 5/2; 10/9; 12/37; 40/27; 4/5; 4; 20; 222

8/7 = 80/70;
20/9 = 80/36;
6/17 -
1/2 = 80/160;
5/2 = 80/32;
10/9 = 80/72;
12/37 -
40/27 = 80/54
4/5 = 80/100