1-3/4=1/1-3/4=4/4-3/4=1/4
1-3/10=1/1-3/10=10/10-3/10=7/10
3-1/3=9/3-1/3=8/3=2/3
8-2/3=24/3-2/3=22/3=1/3
1-3/4=1/1-3/4=4/4-3/4=1/4
1-3/10=1/1-3/10=10/10-3/10=7/10
3-1/3=9/3-1/3=8/3=2/3
8-2/3=24/3-2/3=22/3=1/3