1-1/4=3/4,
2-3/7=1 4/7,
4-5/12=3 7/12,
6-7/15=5 8/15,
8-3/7=7 4/7,
10-1/10=9 9/10,
12-3/5=11 2/5,
16-5/7=15 2/7
найди разность
5/9-13/27=15/27-13/27=2/27,
3/8-5/24=9/24-5/24=4/24=1/6,
2/5-3/8=16/40-15/40=1/40,
5/12-13/72=30/72-13/72=17/72,
3/5-1/7=21/35-5/35=16/35,
7/15-2/9=21/45-10/45=11/45,
11/12-19/60=55/60-19/60=36/60=6/10=3/5,
9/17-27/68=36/68-27/68=9/68,
2/3-5/16=32/48-15/48=17/48,
9/10-4/15=27/30-8/30=19/30,
4/15-11/60=16/60-11/60=5/60=1/12,
5/8-1/3=15/24-8/24=7/24
выполнить вычитание
3/4-1/4=2/4=1/2,
5/8-3/8=2/8=1/4,
7/12-5/12=2/12=1/6,
8/15-2/15=6/15,
3/10-1/10=2/10=1/5,
17/25-12/25=5/25=1/5,
11/30-7/30=4/30=2/15,
28/45-13/45=15/45=1/3